Consider the following liquid-vapor equilibrium 
Liquid  ↔  Vapour 
Which of the following relation is correct?

1. \(\frac{dlnp}{dT}=\frac{-\Delta H_v}{RT}\)

2. \(\frac{dlnp}{dT^2}=\frac{-\Delta H_v}{T^2}\)

3. \(\frac{dlnp}{dT}=\frac{\Delta H_v}{RT^2}\)

4. \(\frac{dlnG}{dT^2}=\frac{-\Delta H_v}{RT^2}\)
Subtopic:  Introduction & Colligative properties |
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