Which one of the following is incorrect for ideal solution?

Options

A. `DeltaH_(mix) = 0`
B. `DeltaU_(mix) = 0`
C. `DeltaP = P_(obs) - P_("calculated by Raoult's law")= 0`
D. `DeltaG_(mix) = 0`

Answer

D

Explanation

For an ideal solution, `DeltaH_(mix) = 0, DeltaV_(mix) = 0, " Now, " DeltaU_(mix) = DeltaH_(mix) – PDeltaV_(mix) :. DeltaU_(mix) = 0`
Also, for an ideal solution,
`P_A=x_AP_A^@ ,P_B = x_BP_B^@ :. DeltaP= P_(obs) - P_("calculated") = 0`
Raoult.s law, `DeltaG_(mix) = DeltaH_(mix) - TDeltaS_(mix)`
For an ideal solution, `DeltaS_(mix) ne 0 :. DeltaG_(mix) ne 0`