Question

Why is entropy of mixing not zero for ideal solutions? - ​

Answer 1

Explanation:

The concept of an ideal solution is fundamental to chemical thermodynamics and its applications, such as the use of colligative properties. An ideal solution or ideal mixture is a solution in which the enthalpy of solution (ΔHsolution=0) is zero; with the closer to zero the enthalpy of solution, the more "ideal" the behavior of the solution becomes. Since the enthalpy of mixing (solution) is zero, the change in Gibbs energy on mixing is determined solely by the entropy of mixing ( ΔS solution)

So the ΔG is not zero

Answer 2

Answer:

the mixture of two ideal situation entropy is increased (from 2nd law of thermodynamics)