Heating of ferrous sulphate is a type of:

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Solution

Q.
Heating of ferrous sulphate is a type of:

1
Decomposition reaction

2
Combination reaction

3
Displacement reaction

4
All of the above

Ans.
(1)

A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. Most decomposition reactions require an input of energy in the form of heat, light, or electricity.

The heating of ferrous sulphate is a decomposition and an endothermic reaction because it involves absorption of heat to form ferric oxide $(F e_{2} O_{3})$ , sulphur dioxide ( $S O_{2}$ ), and sulphur trioxide $(S O_{3})$ .

The equation for this reaction can be written as:
$2 F e S O_{4} (s) \overset{h e a t}{\to} F e_{2} O_{3} (s) + S O_{2} (g) + S O_{3} (g)$

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