ICSE Class 10 Chemistry 2023 Paper

Choose the answer from the list which fits in the description:
$[\mathrm{CCl}_4 \; \mathrm{PbO}, \mathrm{NaCl}, \mathrm{CuO}, \mathrm{NH}_4 \; \mathrm{CI}]$

Question : 86 of 88

Marks: +1, -0

A compound which undergoes thermal dissociation.

Solution:

$\mathrm{NH}_4 \mathrm{Cl}$ : It is a sublimate compound, when heated, it undergoes decomposition reaction to give ammonia gas and hydrogen chloride gas.

\mathrm{NH}_4 \mathrm{Cl} (\mathrm{s}) \rightarrow \mathrm{NH}_3 (\mathrm{g}) + \mathrm{HCl} (\mathrm{g})

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