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

Options

A. `(dlnP)/(dT)=(?H_(v))/(RT^(2))`
B. `(dlnG)/(dT^(2))=(?H_(v))/(RT^(2))`
C. `(dlnP)/(dT)=(-?H_(v))/(RT)`
D. `(dlnP)/(dT^(2))=(-?H_(v))/(T^(2))`

Answer

A

Explanation

The variation of vapour pressure and temperature is `l_(n)P=-(?H^(@))/(RT)` constant on differentiate
`(d(lnP))/(dT)=+(Delta H^(@))/(RT^(@))+0, (d(lnP))/(dT)=(Delta H^(@))/(RT^(2))`