Question

Substance A reacts spontaneously with substance B at room temperature. Substance A reacts with substance C at room temperature only in the presence of a catalyst. Which statement best explains this difference?

Answer 1

Between A and B

• The reaction is spontaneous
• Means reaction is happening by itself.
• So randomness of A and B is increasing .

The highest probability is that A and B are solids and they are forming liquid or gases.

Between A and C

• The reaction is non spontaneous
• Randomness of particles is decreasing.

Highest probability is that A and C are gases and they are turning into liquid or solid