Question

Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction?

(a) Exothermic and increasing disorder

(b) Exothermic and decreasing disorder

(c) Endothermic and increasing disorder

(d) Endothermic and decreasing disorder

Answer 1

The correct option is: (a) Exothermic and increasing disorder

Explanation:

For spontaneous reaction ΔH = -ve, ΔS = +ve

Spontaneity depends upon both critical minimum energy and maximum randomness/disorder.