Which one of the following is incorrect for ideal solution?

Options

A. `Delta H_(mix)=0`
B. `Delta U_(mix)=0`
C. `Delta P=P_(obs.)-P_("calculated by Raoult's law")=0`
D. `Delta G_(mix)=0`

Answer

D

Explanation

Key Idea - For this problem, the following expression can be used.
`Delta G_("mix")=Delta H_("mix")-T Delta S_("mix")`
For an ideal gas
`Delta H_("mix")=0, Delta U_("mix")=0, Delta S_("mix")ne 0`
Putting all these values in the expression.
`Delta G_("mix")=Delta H_("mix")-T Delta S_("mix")rArr Delta G_("mix")=0-T Delta S_("mix")`
`therefore Delta G_("mix")ne 0`
Thus, option (d) is incorrect.