The vapour pressure of ideal solution of benzene and toluene is $550 \mathrm{torr}$ at $80°\mathrm{C}$ then what would be correct statement about same solution at $100°\mathrm{C}.$

$0.2$ moles of $\mathrm{A}$ and $0.3$ moles of $\mathrm{B}$ are taken in separate beakers and enclosed in chamber $\mathrm{I}.$ Another $0.2$ moles of $\mathrm{A}$ and $0.3$ moles of $\mathrm{B}$ are mixed in a beaker and enclosed in chamber$\mathrm{Il}.$ At equilibrium which of the following are not true. ($\mathrm{A}$ and $\mathrm{B}$ are volatile liquids and they form ideal solution on mixing) 

Calculate molarity of final solution obtained by mixing I and II $\mathrm{HNO}$ solution.

$\begin{array}{ccc}& \mathrm{I}& \mathrm{II}\\ \%\frac{\mathrm{W}}{\mathrm{W}}& 12.6& 6.3\\ \mathrm{d}(\mathrm{in} \mathrm{g}/\mathrm{mL})& 1.5& 1\\ \mathrm{Volume} (\mathrm{in} \mathrm{L})& 5& 5\end{array}$