Question

A process which is accompanied by decrease of energy is not always spontaneous.If true enter 1 else o

• A. 1

Answer 1

The correct option is A 1
A process which is accompanied by decrease of energy is not always spontaneous. Consider the expansion of an ideal gas through a pinhole into vacuum. There is no energy change of the system. Yet the process is spontaneous. Also certain endothermic reactions in which energy increases are also spontaneous. For example, evaporation of water from an open container is an endothermic process but it is spontaneous in nature.