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Which of the following gasses is released during the decomposition of ${KClO}_{3}$ ?

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O_{2}

N_{2}

{CO}_{2}

H_{2}

answer is A.

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Detailed Solution

Oxygen gas is released during the decomposition of

{KClO}_{3}

.
On the decomposition of

{KClO}_{3}

, two products are formed: potassium chloride (

KCl

) and oxygen gas. As the potassium chlorate molecule breaks down into potassium chloride and oxygen, it undergoes a decomposition reaction. This reaction is endothermic in nature. Hence,

{3 O}_{2}

is released during the decomposition of

{KClO}_{3}

{2 KClO}_{3} \to 2 KCl + {3 O}_{2}

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