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  • The following reaction is used for the preparation of oxygen gas in the laboratory

The following reaction is used for the preparation of oxygen gas in the laboratory

2KClO_{3}(s) \xrightarrow[catalyst]{heat}2KCl(s)+3O_{2}(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 accompanied by release of heat

(d) It is a photochemical decomposition reaction and exothermic in nature

Answers (1)

Ans. (a)

Potassium chlorate decomposes to give potassium chloride and oxygen. This is a decomposition reaction

Also as shown in the equation, heat is supplied for the reaction to take place.  Hence it is endothermic in nature.

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