Please answer question A by making a PT diagram; I will thumbs down any response without a PT diagram.

Dandekar describes drawbacks of the ideal mixture principle, and states that $K$ values cannot be estimated by using the ideal mixture principle for temperatures above the critical temperature of the most volatile component of the mixture. However, this statement is not entirely correct.

A$.$ Please disprove the above statement of Dandekar by using Equation $16\mathrm{.}25($given below$)$ for plotting the bubble and dew points for the mixture used in Figure $16\mathrm{.}2($also below$)$ from $100F$

to $250F.$ That is$,$ please make a PT diagram that shows $P_b$ and $P_d$ points based on Equation $16\mathrm{.}25$ for the temperature range.

Pd $=)^-1)^-1$

$P_b={\displaystyle \underset{i=1}{\overset{n}{}}}{Z}_i{P}_{va{p}_i}$