Question

If the enthalpy change of a reaction is ∆H how will you calculate entropy of surroundings?

Answer 1

(i) For endothermic reaction, ∆H > 0. This shows the system absorbs heat from surroundings.

 There is decrease in entropy of surroundings.

(ii) For exothermic reaction, ∆H < 0, hence for surroundings, Δ_surr H > 0

\(\therefore\) Δ_surr > 0.