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In a mixture of closely related liquids ...

In a mixture of closely related liquids (such as benzene and toluence), the Roult's law states that the ratio `P_(A)` is proportional to the mole fraction of A in the liquid, `P_(A)x_(A)`. Mixtures that obey the law throughout the composition ranges from pure A to pure B are called ideal solutions . In ideal solution the solute also obeys Roult's law . Then the total pressure is given by `P_("total")=P_(A)^(0)x_(A)+P_(B)^(0)x_(B)`
For the solution which obeys Roult's law , which of the following is incorrect ?

A

`DeltaV_("mix")=0`

B

`DeltaH_("mix")=0`

C

`DeltaS_("mix")=0`

D

`P_("total")=P_(A)^(0)x_(A)+P_(B)^(0)x_(B)`

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The correct Answer is:
C
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