Problem 2.212

In the vicinity of the triple point the saturated vapour pressure $p$ of carbon dioxide depends on temperature $T$ as $\log p$ $=a-b / T,$ where $a$ and $b$ are constants. If $p$ is expressed in atmospheres, then for the sublimation process $a=9.05$ and $b=1.80 \mathrm{kK}$ and for the vaporization process $a=6.78$ and $b=1.31 \mathrm{kK} .$ Find: (a) temperature and pressure at the triple point; (b) the values of the specific latent heats of sublimation, vaporization, and melting in the vicinity of the triple point.