in the presence of cobalt chloride, bleaching powder decomposes to form

in the presence of cobalt chloride, bleaching powder decomposes to form

A
${CaCO}_{3}$ and $O_{3}$
B
${ClO}_{2}$ and $CaO$
C
${Cl}_{2} O$ and $CaO$
D
${CaCl}_{2}$ and $O_{2}$

Solution:

Bleaching powder loses oxygen in presence of cobalt chloride which acts a catalyst.

$2 {CaOCl}_{2} \overset{{COCl}_{2}}{⟶} 2 {CaCl}_{2} + O_{2}$

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