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Consider the following liquid-vapour equ...

Consider the following liquid-vapour equilibrium.
`"Liquid" hArr "Vapour"`
Which of the following relations is correct?

A

(A) `("dInP")/(dT)=(-DeltaH_(v))/(RT)`

B

(B) `("dInP")/(dT^(2))=(-DeltaH_(v))/(T^(2))`

C

(C) `("dInP")/(dT)=(DeltaH_(v))/(RT^(2))`

D

(D) `("dInG")/(dT^(2))=-(DeltaH_(v))/(RT^(2))`

Text Solution

Verified by Experts

The correct Answer is:
C
The given phase equilibria is Liquid `hArr` Vapour This equilibrium states that, when liquid is heated, it converts into vapour , which is derived by Clausius Clapeyron and the relationship is written as,
`(d"In" p)/(dT)=-(DeltaH_(v))/(RT^(2))`
Where, `DeltaH_(v)` =Heat of vaporisation
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