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  • Consider the following liquid-vapour equilibrium. <img alt="Liquid\rightleftharpoons Vapour" src="https

Consider the following liquid-vapour equilibrium.

Liquid\rightleftharpoons Vapour

Which of the following relations is correct?

Option: 1

\frac{dlnG}{dT^2}=\frac{\Delta H_v}{RT^2}


Option: 2

\frac{dlnP}{dT}=\frac{-\Delta H_v}{RT}


Option: 3

\frac{dlnP}{dT^2}=\frac{-\Delta H_v}{T^2}


Option: 4

\frac{dlnP}{dT}=\frac{\Delta H_v}{RT^2}


Answers (1)

best_answer

The equation for a transition of a liquid to vapor is given by

\frac {d lnP}{dT} = \frac {-\Delta H_{v}}{RT^{2}}

WhereH_{V} = heat of vaporization

The Correct answer is option 4

Posted by

Deependra Verma

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