Q. 109
In a liquid-vapour phase change process, $\left(\frac{\mathrm{d} P}{\mathrm{~d} T}\right)_{\text {sat }}$ at $100{ }^{\circ} \mathrm{C}$ for saturated water is $3750 \mathrm{~Pa} / \mathrm{K}$. If the resulting change in specific volume $\left(v_{g}-v_{f}\right)$ is $1.672 \mathrm{~m}^{3} / \mathrm{kg}$, the enthalpy of vaporization $\left(h_{f g}\right)$ will be $\mathrm{kJ} / \mathrm{kg}$ (in integer).
