Mixing of two different ideal gases under isothermal reversible condition will lead to-

Options

A. increase in gibbs free energy of the system
B. no change of entropy of the system
C. increase in entropy of the system
D. increase in enthalpy of the system

Answer

C

Explanation

The molecular randomness in a gas mixture is larger than those in the individual gases becaue gas mixture contains larger number of molecules than that in the individual gases. Consequently, mixing of two gases will lead to the increase in entropy of the system.