Question

Clausius-Clapeyron’s latent heat equation is represented as:

• A.
• B.
• C.
• D.

Hint:

Clausius-Clapeyron is often used to approximate the slope of phase boundaries in a PT diagram.

Answer 1

The Correct Option is A

For a phase change $(1 \rightarrow 2)$ at constant equilibrium, Clausius-Clapeyron relation is
$$\frac{dP}{dT} = \frac{\Delta H_{\text{vap}}}{T \Delta V},$$
where $\Delta H_{\text{vap}} = L \text{ (latent heat)},$ and $\Delta V = V_2 - V_1$.