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The white solid compound A decomposes quite rapidly on heating in the presence of a black substance X to form a solid compound B and a gas C. When an aqueous solution of compound B is reacted with silver nitrate solution, then a white precipitate of silver chloride is obtained along with potassium nitrate solution. Gas C does not burn itself but helps burn other things. (a) What is compound A ? (b) What is compound B ? (c) What is gas C ?(d) What do you think is the black substance X ? What is its function ? (e) What is the general name of substances like X ? |
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Answer» (a) Potassium chlorate, KClO3 (b) Potassium chloride, KCl (c) Oxygen, O2 (d) Manganese dioxide, MnO2 ; It acts as a catalyst in the decomposition of potassium chlorate to form oxygen gas (e) Catalysts |
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