to be ideal.

DATA

$(12$ marks$)$

Temperature:

Pressures:

Boiling points:

Pref

Enthalpies of vaporisation:

$H_1^{\text{i}\text{a}\text{p}}=23kJmo{l}^{-1}$

$H_2^{\text{'}ap}=31kJmo{l}^{-1}$

$R=8\mathrm{.}314Jmo{l}^{-1}{K}^{-1}$

Equations can be obtained from APPENDIX $A$ in the appendix.

Clausius$-$Clapeyron Equation $ln(\frac{P_1}{P_2})=-\frac{H_{\text{u}\text{n}\text{p}}}{R}(\frac{1}{T_1}-\frac{1}{T_2})$