$\frac{\text{d}\text{e}\text{l}(\frac{g^E}{R}T)}{\text{d}\text{e}\text{l}\text{T}}=-\frac{h^E}{R{T}^2}$

and assuming for simplicity, that $h^E$ is temperature independent. Determine the UCST.

$[$Note: A trial and error procedure is necessary since $T_U$ is not known initially. A trial value of $T_U=110K$

may be used. The universal gas constant can be taken as $R=1\mathrm{.}987ca\frac{l}{m}ol]$