Question

Strong heating of ferrous sulphate leads to the formation of a brown solid
and two gases. This reaction can be categorised as
A) displacement and redox.
B) decomposition and redox.
C) displacement and endothermic.
decomposition and exothermic.
f IT so
ir miyod with 10 ml of Mg(OH), of the sa​

Answer 1

Answer:

This reaction can be categorised as  (B) decomposition and redox.

- Ferrous sulphate when heated gets decomposed into ferric oxide, sulphur dioxide and sulphur trioxide as follows:

2FeSO4  →  Fe2O3 + SO2 + SO3

- Here, the oxidation number of iron changes from +2 in FeSO4 to +3 in Fe2O3 causing oxidation.

- The oxidation state of S changes from +6 in FeSO

4 to +4 in SO2 causing reduction.

- Hence, this decomposition reaction is also a redox reaction.

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