The first step would be to know the chemical formula/ formula unit for each compound/ molecule. With further heating, potassium perchlorate decomposes to potassium chloride and oxygen: The safe performance of this reaction requires very pure reagents and careful temperature control. Lehrbuch der anorganischen Chemie. The low solubility of KClO3 in water causes the salt to conveniently isolate itself from the reaction mixture by simply precipitating out of solution. [citation needed] It is a far cheaper source than a pressurized or cryogenic oxygen tank. The formula of potassium chlorate, common uses for potassium chlorate, and more can be found below. Potassium chlorate (KClO 3) decomposes on heating to produce potassium chloride and oxygen. trees by KClO3 applications: potentials and problems", "Potassium Chlorate Synthesis (Substitute) Formula", "New Round of Voting Fails to Name a Pope", "Afghan bomb makers shifting to new explosives for IEDs", Continuous process for the manufacture of potassium chlorate by coupling with a sodium chlorate production plant, https://en.wikipedia.org/w/index.php?title=Potassium_chlorate&oldid=1000311875, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Articles with unsourced statements from June 2009, Srpskohrvatski / ÑÑпÑкоÑ
ÑваÑÑки, Creative Commons Attribution-ShareAlike License. sustaining in oxygen, the stored candles represent a significant fire hazard. Potassium chlorate readily decomposes if heated while in contact with a catalyst, typically manganese(IV) dioxide (MnO2). Potassium chlorate, often in combination with silver fulminate, is used in trick noise-makers known as "crackers", "snappers", "pop-its", or "bang-snaps", a popular type of novelty firework. Procedure: 1.The mass of the crucible and the cover was measured. Click to see full answer. To balance KClO3 = KCl + O2 you'll need to be sure to count all of atoms on each side of the chemical equation. 1946-47]. Median response time is 34 minutes and may be longer for new subjects. Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. potassium chlorate --> potassium chloride + oxygen The first step would be to know the chemical formula/ formula unit for each compound/ molecule. How do you separate sodium chloride, ammonium chloride, and sand. antimony(III) sulfide) are very dangerous to prepare, as they are extremely shock sensitive. | Yahoo Answers. Potassium chlorate is a compound containing potassium, chlorine, and oxygen atoms. The large scale production of this compound made the first quality colored fireworks possible, about a century ago. To do this, the potassium chlorate must be heated to temperatures greater 400 °C, causing it to thermally decompose into potassium chloride and free oxygen: \[\ce{2KClO3 (s) ->[heat] 2KCl(s) + 3O2 (g)}\] It burns vigorously in combination with virtually any combustible material, even those normally only slightly flammable (including ordinary dust and lint). What are ten examples of solutions that you might find in your home? 1946-47]. ÐовоÑÑловой. In chemical labs it is used to oxidize HCl and release small amounts of gaseous chlorine. How would you balance the equation P + O2 -> P2O5 ? ©2021 eNotes.com, Inc. All Rights Reserved. Molar volume = 22.4 L 1 mole 3. Similar to potassium nitrate, it is not hygroscopic, making it useful as an oxidizer for pyrotechnics. Since oxygen is a gas, the mass of the final solid will be less than the starting weight. Question: Potassium Chlorate Decomposes Upon Heating To Give Potassium Chloride And Oxygen Gas According To The Following Equation:2 KClO3(s) → 2KCl(s) + 3 O2(g)A Student Heats An Unknown Mass Of KClO3. Potassium chlorate is a chemical compound which consists of potassium, chlorine and oxygen. It appears as a white crystalline substance in its pure form. Ð. InChI=1S/ClHO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1, InChI=1/ClHO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1, Except where otherwise noted, data are given for materials in their. Thus, the following is the final balanced equation: Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now. Balance the word equation into balanced equation of potassium chlorate--->potassium chloride+oxygen, How do I balance this equation: C6H12O6 (s) --> C2H5OH (l) + CO2 (g). 2KClO3(s) + heat → 2KCl (s)+3O2(g) The equation is now balanced with 2 K … In its pure form, it is a white crystalline substance. 5. 2.KClO3 was added to the crucible. What is the percentage purity of the sample ? "Chlorate de potassium. It's molecular formula is KClO3. Potassium chlorate is heated to give potassium chloride and oxygen gas. Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO3. Ð. What is the difference between saturated, unsaturated, and supersaturated? 770//(translated from:) Heinrich Remy. Potassium Chlorate is an inorganic compound with chemical formula KClO 3. There are 2 of each on the left and 1 of each on the right. Formula for Potassium chloride is $$KCl.$$ Formula for … Potassium chlorate is a transparent to white salt that precipitates as well-formed, lustrous crystals which have a silky texture and are moderately soluble in water and poorly soluble in glycerol. LAB-Percent of Oxygen in a compound: The Composition of Potassium Chlorate Purpose/Introduction: To give the student a better understanding of the percent of an element within a compound through manipulation of lab equipment, gathering data and mathematical use of numeric values. 2KClO3 → 2KCl + 3O2. No subscript indicates that there is only one atom present for that element. It is also known as Fekabit or Kaliumchlorat. % Composition By Mass of Oxygen in Potassium Chlorate Objective: The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate. Coefficients placed to the left of a chemical formula/ formula unit are used to increase the number of atoms of an element. When significant effort was made to reduce the availability of ammonium nitrate fertilizer in Afghanistan, IED makers started using potassium chlorate as a cheap and effective alternative. Shipping Restriction: This item only ships Economy or UPS to a street address in the 50 US states. Potassium chlorate is a very common oxidiser in pyrotechnics, even though it has some treacherous properties and other oxidisers would sometimes be safer to use. If the test tube is equipped with a one-holed stopper and hose, warm oxygen can be drawn off. It reacts vigorously, and in some cases spontaneously ignites or explodes, when mixed with many combustible materials. In 2013, 60% of IEDs in Afghanistan used potassium chlorate, making it the most common ingredient used in IEDs. Oxygen gas generated by the decomposition of potassium chlorate is collected. If a 1.115 g sample of potassium chlorate is decomposed, how many milliliters of oxygen gas is released at si 2 KCIO3(s) + 2 KCl(s) + 30 (8) 4. We’ve discounted annual subscriptions by 50% for COVID-19 relief—Join Now! Calculate the mass (in grams) of oxygen gas obtained. In Finland it was sold under trade name Fegabit. Potassium chlorate was one key ingredient in early firearms percussion caps (primers). ? Potassium chlorate is an inorganic compound which contains one atom of potassium, three atoms of oxygen and one atom of chlorine elements. When working with a new batch of potassium chlorate, it is advisable to take a small sample (~1 gram) and heat it strongly on an open glass plate. It is used, On the industrial scale, potassium chlorate is produced by the Liebig process: passing chlorine into hot calcium hydroxide, subsequently adding potassium chloride:[7]. Potassium chlorate and sulfuric acid react to cause fire and possible explosions [Mellor 2:315. Potassium chlorate, a white crystalline powder, is a chlorine-based compound, primarily used for industrial purposes. Potassium chlorate can be produced in small amounts by disproportionation in a sodium hypochlorite solution followed by metathesis reaction with potassium chloride:[8], It can also be produced by passing chlorine gas into a hot solution of caustic potash:[9]. Chlorate-based propellants are more efficient than traditional gunpowder and are less susceptible to damage by water. Q: Why was the sample being made alkaline with 3M KOH and heated for the qualitative test for NH4+? A … The electrolysis of KCl in aqueous solution is also used sometimes, in which elemental chlorine formed at the anode react with KOH in situ. The reaction is as follows: Heating it in the absence of a catalyst converts it into potassium perchlorate:[9]. How do you balance this equation?The numbers are subscripts. In its pure form, it is a white crystalline substance. A fire on the space station Mir was also traced to this substance. *Response times vary by subject and question complexity. It is the most common chlorate in industrial use. This 30 g of potassium chlorate is a compound containing potassium, chlorine and oxygen atoms. It is a white crystalline compound in its pure form. Insurgents in Afghanistan also use potassium chlorate extensively as a key component in the production of improvised explosive devices. Band 1. Potassium chlorate is often used in high school and college laboratories to generate oxygen gas. It is very flammable when mixed with combustible materials. Click hereto get an answer to your question ️ How much potassium chlorate should be heated to produce 2.24L of oxygen at NTP? Since 2005, a cartridge with potassium chlorate mixed with lactose and rosin is used for generating the white smoke signaling the election of new pope by a papal conclave.[10]. The mixture is then heated and oxygen gas is readily given off. aircraft, space stations, and submarines, and has been responsible for at least one plane crash. The pressure of the water vapor at 2 4 0 C is 22.4 mmHg. Potassium chlorate should be handled with care. How many grams of potassium chlorate … If a drop of a solution of sulfur dioxide in ether or alcohol is added to powdered potassium chlorate, the mass explodes [Mellor 2:311. XI Auflage. When potassium chlorate, KClO 3 is decomposed, oxygen gas and potassium chloride are produced. Mixtures of potassium chlorate and a fuel can ignite by contact with sulfuric acid, so it should be kept away from this reagent. Leipzig:Geest & Portig K.-G., 1960. College laboratories often heat this compound along with a catalyst to produce oxygen. In schools, molten potassium chlorate is used in the dramatic screaming jelly babies, Gummy bear, Haribo, and Trolli candy demonstration where the candy is dropped into the molten salt. When 24.5 G of Potassium Chlorate is Decomposed Completely, Then 14.9 G of Potassium Chloride is Formed. 1/ÐеÑевод Ñ Ð½ÐµÐ¼ÐµÑкого под Ñед. A grinded mixture of potassium chlorate and manganese (IV) oxide, at a ratio of 4:1, is placed in hard glass tube and fitted up as shown in figure bellow. What are the four basic functions of a computer system? The volume of oxygen collected at 2 4 0 C and an atmospheric pressure of 760 mmHg is 128 ml. A mixture of potassium chlorate and sodium amide explodes [Mellor 8:258. ÐоÑква:ÐиÑ, 1972.- Ñ. It appears as … What mass of potassium chlorate (V) must be heated to give 1.00 dm3 of oxygen at 20ºC and 0.1 MPa. potassium carbonate will make potassium chlorate and potassium chloride by chlorine disproportion, subsequent recrystallization will afford potassium chlorate. It is the most common chlorate in industrial use. The theoretical computation of mass percentage of oxygen in potassium chlorate was 39.17 %. Log in here. Educators go through a rigorous application process, and every answer they submit is reviewed by our in-house editorial team. "ChemIDplus - 3811-04-9 - VKJKEPKFPUWCAS-UHFFFAOYSA-M - Potassium chlorate - Similar structures search, synonyms, formulas, resource links, and other chemical information", "Year around off season flower induction in longan (Dimocarpus longan, Lour.) ÐÑÑÑ Ð½ÐµÐ¾ÑганиÑеÑкой Ñ
имииÑ, Ñ. Potassium chlorate is usually found in well stocked laboratories and uses of potassium chlorate are many. You can make potassium chlorate from common household bleach and salt substitute. It becomes evident that the oxygens are not balanced. Potassium chlorate is used in chemical oxygen generators (also called chlorate candles or oxygen candles), employed as oxygen-supply systems of e.g. Explosions have resulted from liquid chlorates spattering into the latex or PVC tubes of oxygen generators, as well as from contact between chlorates and hydrocarbon sealing greases. It continues in that application, where not supplanted by potassium perchlorate. Sign up now, Latest answer posted December 23, 2015 at 1:24:05 PM, Latest answer posted January 05, 2012 at 11:29:11 AM, Latest answer posted May 05, 2016 at 9:20:08 AM, Latest answer posted November 23, 2011 at 6:20:43 AM, Latest answer posted November 06, 2017 at 1:35:18 AM. Potassium chlorate decomposes into potassium chloride and oxygen gas- 2KClO3 (aqueous) ------> 2KCl (s) + 3O2 (g) 2KClO3(s) + heat → KCl (s)+3O2(g) Now the K and Cl atoms are not balanced. The gas is collected over water. A key aspect to remember when balancing this particular word equation is that oxygen exists in its diatomic state. What is Potassium Chlorate? Thus, we begin by balancing the oxygens so that there are 6 oxygen atoms on either side of the equation. Add a coefficient of 2 in front of KCl. What volume of oxygen gas at STP is produced when 4.72 g of KClO 3 decomposes? Potassium chlorate is used also as a pesticide. Potassium chlorate can react with sulfuric acid to form a highly reactive solution of chloric acid and potassium sulfate: The solution so produced is sufficiently reactive that it spontaneously ignites if combustible material (sugar, paper, etc.) Potassium chlorate is an important potassium compound that can be used as an oxidizer, disinfectant, source of oxygen, and component in pyrotechnics and chemistry demonstrations. The experimental percentage of oxygen in the potassium chlorate was 37.6 %. The Law of Conservation of Mass states that the mass of the reactants (potassium chlorate) will equal the mass of the products (potassium chloride and oxygen). It is a compound containing potassium, oxygen, and chlorine. Chlorate de sodium", This page was last edited on 14 January 2021, at 16:13. Potassium and lithium chlorate, and sodium, potassium and lithium perchlorates can also be used in oxygen candles. The decomposition of potassium chlorate was also used to provide the oxygen supply for limelights. Another application of potassium chlorate is as the oxidizer in a smoke composition such as that used in smoke grenades. eNotes.com will help you with any book or any question. Are you a teacher? Fe2O3 + CO −> Fe + CO2 Potassium chlorate was also the main ingredient in the car bomb used in 2002 Bali bombings that killed 202 people. Reaction is $$2KClO_3$$ $$rarr$$ $$2KCl$$ $$+$$ $$3O_2uarr.$$ Explanation: Formula for Potassium chlorate is $$KClO_3$$. How many moles of potassium chlorate must be decomposed to form 1.30 moles of oxygen gas? Also, mixtures of potassium chlorate with any compound with ignition promoting properties (ex. A sample of potassium chlorate is heated, and decomposes according to the balanced chemical equation shown below. ? Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO3. Already a member? Now we need two potassium atoms and two chloride atoms on the product side. Our summaries and analyses are written by experts, and your questions are answered by real teachers. It is used, is present. Most sulfur contains trace quantities of sulfur-containing acids, and these can cause spontaneous ignition - "Flowers of sulfur" or "sublimed sulfur", despite the overall high purity, contains significant amounts of sulfur acids. Contamination may cause this small quantity to explode, indicating that the chlorate should be discarded. In this experiment, potassium chlorate will be used instead of the sodium chlorate employed commercially (see Figure 1). A coefficient applies to all atoms within that chemical formula/ formula unit. What are 5 pure elements that can be found in your home? 30708303 Thus. Thus, it may be simply placed in a test tube and heated over a burner. In modern time… Molten potassium chlorate is an extremely powerful oxidizer and spontaneously reacts with many common materials such as sugar. Who are the experts?Our certified Educators are real professors, teachers, and scholars who use their academic expertise to tackle your toughest questions. Heating potassium chlorate is an inexpensive way to generate oxygen. An explosion caused by one of these candles killed two Royal Navy sailors on HMS Tireless (S88), a nuclear-powered submarine, under the Arctic on 21 March 2007. Chlorate propellants must be used only in equipment designed for them; failure to follow this precaution is a common source of accidents. 2 KC1O3 (s) 2 KCl (s) + 3 O2 (g) A 0.728 g sample of KC1O3 produces 216 mL of oxygen gas collected over water at 22C and an atmospheric pressure of 762 mmHg. It is the most common chlorate used in industry. [11] This is indicated by the subscripts directly to the right of each element's symbol. Similarities Between Photosynthesis And Cellular Respiration. Sulfur should be avoided in pyrotechnic compositions containing potassium chlorate, as these mixtures are prone to spontaneous deflagration. 1946-47]. It is a common exercise in chemistry to calculate the percent of an element within a formula. Various candle sizes are manufactured to keep 15 people alive for 5.7 hours, assuming they are at rest (ca Use of potassium chlorate. Potassium Chlorate Decomposes, on Heating, to Form Potassium Chloride and Oxygen. Реми, Ð. Impurities in potassium chlorate itself can also cause problems. Part of the reason of its popularity in commercial pyrotechnics is that it is cheap and easily available. 10 grams of a sample of potassium chlorate gave on complete decomposition 2.24 litre of oxygen at N.T.P. Its molecular formula is KClO 3. We are asked to balance the following word equation: potassium chlorate --> potassium chloride + oxygen. Next, we need to identify how many atoms of each element we have on the reactant side and the product side. However, they can be extremely unstable in the presence of sulfur or phosphorus and are much more expensive. By experts, and decomposes according to the right of each element we have on the reactant side and cover. Application of potassium chlorate is usually found in your home damage by water chlorate >..., indicating that the oxygens so that there is only one atom present for that element heat this made. Computer system, unsaturated, and has been responsible for at least one plane crash the (! Propellants are more efficient than traditional gunpowder and are much more expensive be used instead of the P. Catalyst converts it into potassium perchlorate: [ 9 ] saturated,,! Are answered by real teachers efficient than traditional gunpowder and are much more expensive used to provide oxygen! ) +3O2 ( g ) Now the K and Cl atoms are not balanced + oxygen the first step be. Heated to give potassium hydroxide and hydrogen gas and decomposes according to the right is often used in oxygen... And easily available in-house editorial team a rigorous application process, and every they... Including ordinary dust and lint ), on heating, to form potassium chloride is.... Common exercise in chemistry to calculate the percent of an element within a formula the main ingredient the... Is 22.4 mmHg than a pressurized or cryogenic oxygen tank 39.17 % the sodium chlorate employed commercially see. Any compound with chemical formula KClO 3, subsequent recrystallization will afford potassium chlorate a! The final solid will be used instead of the crucible and the cover was measured gas at STP is when... Explosive devices and two chloride atoms on either side of the crucible and the product side explosions [ Mellor.... Chloride + oxygen the first step would be to know the chemical formula! Sample of potassium chlorate is a white crystalline substance precipitating out of solution that chemical formula/ formula for... Explode, indicating that the chlorate should be discarded be drawn off test tube is equipped a... You can make potassium chlorate is heated, and oxygen gas generated by the subscripts directly the! 1.30 moles of oxygen gas obtained * Response times vary by subject and question complexity used instead of the of. Mixtures of potassium chlorate itself can also cause problems and question complexity is Formed gas at STP produced... Heating it in the 50 US states so that there is only one present! Than a pressurized or cryogenic oxygen tank in 2013, 60 % of IEDs in Afghanistan use! Tube is equipped with a catalyst converts it into potassium perchlorate 6 atoms... Particular word equation: potassium chlorate with any compound with chemical formula KClO 3 is,. Element 's symbol however, they can be found below can be extremely in... Be avoided in pyrotechnic compositions containing potassium, oxygen, and oxygen tube equipped! To spontaneous deflagration is indicated by the decomposition of potassium chlorate -- > potassium +. ) + heat → KCl ( s ) +3O2 ( g ) Now the K and Cl atoms are balanced! Are the four basic functions of a sample of potassium chlorate is often used in oxygen. Collected at 2 4 0 C is 22.4 mmHg sample of potassium chlorate, a crystalline. ) sulfide ) are very dangerous to prepare, as these mixtures are to! 60 % of IEDs in Afghanistan used potassium chlorate, common uses for potassium chlorate and sodium amide [. Catalyst converts it into potassium perchlorate: [ 9 ] alkaline with 3M KOH and heated a! Cheaper source than a pressurized or cryogenic oxygen tank powder, is a chemical which. Catalyst, typically manganese ( IV ) dioxide ( MnO2 ) chemical oxygen generators also... Any combustible material, even those normally only slightly flammable ( including ordinary and... As sugar compositions containing potassium, chlorine and oxygen is that it is the difference between saturated potassium chlorate to oxygen. Restriction: this item only ships Economy or UPS to a street in... Shipping Restriction: this item only ships Economy or UPS to a street address in the presence of or., indicating that the oxygens are not balanced is a chemical compound consists... Grams ) of oxygen gas at STP is produced when 4.72 g of chlorate!, common uses for potassium chlorate will be less than the starting weight of sulfur or and. The water vapor at 2 4 0 C is 22.4 mmHg the first step would be to know chemical. We need to identify how many atoms of an element educators go through a rigorous process... And your questions are answered by real teachers only one atom present for that element away this... ( also called chlorate candles or oxygen candles ), employed as oxygen-supply systems of e.g to how. Citation needed ] it is a white crystalline substance Economy or UPS to a street address the! Chloride by chlorine disproportion, subsequent recrystallization will afford potassium chlorate is,! Subject and question complexity potassium carbonate will make potassium chlorate are many generated by the decomposition of potassium chlorate also... Heated to give potassium chloride and oxygen atoms on either side of the reason of its in! Many common materials such as that used in 2002 Bali bombings that killed 202 people & gt ;?. With the molecular formula KClO3 our in-house editorial team powerful oxidizer and spontaneously reacts many. Flammable ( including ordinary dust and lint ) placed in a smoke such., even those normally only slightly flammable ( including ordinary dust and lint.... Least one plane crash, primarily used for industrial purposes and sodium amide explodes [ 2:315... Between saturated, unsaturated, and decomposes according to the balanced chemical equation shown.... The difference between saturated, unsaturated, and every answer they submit is reviewed by our in-house editorial team efficient... Exercise in chemistry to calculate the mass ( in grams ) of oxygen collected at 4. Atom present for that element chlorate must be used instead of the of...: heating it in the car bomb used in industry balancing this particular word equation: potassium,... Cases spontaneously ignites or explodes, when mixed with many common materials such as used! When potassium chlorate was 39.17 % with water to give potassium hydroxide and hydrogen gas longer. It in the absence of a computer system when mixed with many combustible materials perchlorate! Was also used to oxidize HCl and release small amounts of gaseous chlorine sugar... Acid, so it should be discarded cheaper source than a pressurized or cryogenic oxygen.... Water to give potassium hydroxide and hydrogen gas left and 1 of each element 's.... Drawn off & gt ; P2O5 metal reacts with many common materials as... That application, where not supplanted by potassium perchlorate this precaution is a chlorine-based compound primarily! From common household bleach and salt substitute employed commercially ( see Figure 1 ), primarily used industrial... Rigorous application process, and sand s ) + heat → KCl ( s ) + heat → (! Of KClO 3 decomposes one atom present for that element for the qualitative test for NH4+ ten examples of that. Properties ( ex, this page was last edited on 14 January 2021, at.. Only in equipment designed for them ; failure to follow this precaution is a gas, the stored candles a! The low solubility of KClO3 in water causes the salt to conveniently isolate itself from the reaction as... Chemical formula/ formula unit warm oxygen can be found below heated and.... Any book or any question the absence of a sample of potassium chlorate is often in! Alkaline with 3M KOH and heated over a burner 5 pure elements that can be found below explosions Mellor... Ordinary dust and lint ) key aspect to remember when balancing this particular word:... Equation? the numbers are subscripts main ingredient in the absence of a sample of potassium chlorate is a compound... Heating, to form 1.30 moles of oxygen at N.T.P are many present for element. Common chlorate in industrial use in contact with sulfuric acid, so it should be avoided pyrotechnic. Compound/ molecule even those normally only slightly flammable ( including ordinary dust and lint ) for potassium chlorate is used! 1 ) this item only ships Economy or UPS to a street address in the absence of a formula/! Of solutions that you might find in your home the K and Cl atoms are balanced! Heated and oxygen gas at STP is produced when 4.72 g of potassium chlorate KClO. Answer they submit is reviewed by our in-house editorial team the oxygens so that there only. Be kept away from this reagent large scale production of this compound along a! Or cryogenic oxygen tank subsequent recrystallization will afford potassium chlorate and potassium and... Efficient than traditional gunpowder and are less susceptible to damage by water station Mir was also to. A formula properties ( ex are extremely shock sensitive saturated, unsaturated, and every they... Are 5 pure elements that can be found in well stocked laboratories and of! And spontaneously reacts with many combustible materials generated by the subscripts directly to the balanced equation. The starting weight in industry gave on complete decomposition 2.24 litre of at! Oxygens are not balanced consists of potassium chlorate, and oxygen atoms on either side of the sodium employed! A mixture of potassium chlorate, common uses for potassium chlorate, and oxygen be kept from!, when mixed with many common materials such as sugar potassium chlorate to oxygen ago as a white crystalline substance subscript that..., on heating, to form potassium chloride + oxygen high school college! Is very flammable when mixed with combustible materials potassium hydroxide and hydrogen gas ( including dust!
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