3. The following reaction is used for preparation of oxygen gas in the laboratory Heat 2KClO3(s) → 2KCl (s) +3 O2 (g) Which of the following statement(s) is (are) correct about the reaction? a) It is a decomposition reaction and endothermic in nature. b) It is a combination reaction c) It is a decomposition reaction and is accompanied by release of heat. d) It is a photo chemical decomposition reaction and exothermic in nature.
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Explanation:
it is a decomposition reaction as potassium chlorate compound breaks to form potassium chloride and oxygen. This reaction requires heat as source of energy to break down the compound so it is endothermic in nature.
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