Question

The total number of products formed by thermal decomposition of ${\mathrm{FeSO}}_4$ are :

• A. 3

Answer 1

The correct option is A 3
Thermal decomposition of ferrous sulphate produces ferric oxide, sulphur dioxide. and sulphur trioxide. The complete reaction is as follows:
$2{\mathrm{FeSO}}_4\left(s\right)\stackrel{\mathrm{heat}}{\to }\mathrm{Fe}2O_3\left(s\right)+{\mathrm{SO}}_2\left(g\right)+{\mathrm{SO}}_3\left(g\right)$

Therefore, the total number of products formed are three.