Question $19$

Consider a solution with components i and j$.$ The energies of molecular interactions between molecules ii$,$ jj$,$ and ij are respectively $1\mathrm{.}01,1\mathrm{.}47,$ and $1\mathrm{.}21$ eV$.$ Assuming a regular solution behavior, determine at what temperature this solution will become immiscible. Enter your result in oC$.$

Question $20$

Continue considering the solution with components i and j from Q$19.$ Assume that the solution contains $0\mathrm{.}8$ moles of component i and $1\mathrm{.}2$ moles of component j at the temperature of $0$oC$.$ Select the correct description of this solution in equilibrium.

Continuing with conditions set in Q$20.$ How many moles of liquids

$1$ and $2($L$1$ and L$2,$ respectively$)$ are present?

$1.$L$1$:$1\mathrm{.}56$; L$2$:$0\mathrm{.}44$

$2.$L$1$:$1\mathrm{.}06$; L$2$:$0\mathrm{.}94$

$3.$L$1$: $1\mathrm{.}20$; L$2$:$0\mathrm{.}80$

$4.$L$1$: $0\mathrm{.}50$; L$2$:$0\mathrm{.}50$

$5.$L$1$:$0\mathrm{.}00$; L$2$:$2\mathrm{.}00$

$6.$L$1$:$2\mathrm{.}00$ ; L$2$:$0\mathrm{.}00$

$7.$L$1$: $0\mathrm{.}44$; L$2$:$1\mathrm{.}56$

$8.$L$1$: $1\mathrm{.}27$; L$2$:$0\mathrm{.}731$