Consider the following aqueous solutions: $($i$)0\mathrm{.}17mHOC{H}_{2}C{H}_{2}OH($nonvolatile$,$ nonelectrolyte$)$; $($ii$)0\mathrm{.}10mBaB{r}_2$;

$($iii$)0\mathrm{.}12mKBr$; and $($iv$)0\mathrm{.}12mC{s}_{2}S{O}_4.$

a$.$ Which solution has the highest boiling point?

$0\mathrm{.}12mC{s}_{2}S{O}_4$

$0\mathrm{.}17mHOC{H}_{2}C{H}_{2}OH$

$0\mathrm{.}10mBaB{r}_2$

$0\mathrm{.}12mKBr$

b$.$ Which solution has the lowest freezing point?

$0\mathrm{.}12mC{s}_{2}S{O}_4$

$0\mathrm{.}17mHOC{H}_{2}C{H}_{2}OH$

$0\mathrm{.}10mBaB{r}_2$

$0\mathrm{.}12mKBr$

c$.$ Which solution has the highest water vapor pressure?

$0\mathrm{.}12mC{s}_{2}S{O}_4$

$0\mathrm{.}17mHOC{H}_{2}C{H}_{2}OH$

$0\mathrm{.}10mBaB{r}_2$

$0\mathrm{.}12mKBr$