Question

The characteristic(s) observed during the reaction between iron sulphate and zinc is/are:

• A. colour change
• B. formation of a precipitate
• C. absorption of heat
• D. evolution of heat

Answer 1

Answer: (A), (D)

The correct options are
A colour change
D evolution of heat

Zinc is more reactive than iron. So when it is added to iron sulphate solution it displaces iron. The reaction involved is:

$\text{Zn (s)}+{\text{FeSO}}_4\text{(aq)}\to {\text{ZnSO}}_4\text{(aq)}+\text{Fe(s)}+\text{Heat}$

The colour of solution changes from green to colourless due to the formation of zinc sulphate. The reaction is exothermic in nature.