Question

Water at $0^{o}C$ , contained in a closed vessel, is abruptly opened in an evacuated chamber specific latent heats of fusion and vapourization at $0^{o}C$ are in the ratio $\lambda :1,$ the water evaporated will be :

Answer 1

Since ratio of latent heat of fusion and latent heat of vaporisation at $0^{\circ }C$ is given by

$\frac{L_F}{L_V}=\frac{\lambda }{1}$

Amount of water evaporated

$W=\frac{1}{\lambda +1}$