Question $1$

An aqueous solution has a boiling point of $101\mathrm{.}4C.$ The solution is diluted by

a factor of $5.$ What is the freezing point of the diluted solution? Assume a

van't Hoff factor of $1.($For water, $K_f=1\mathrm{.}86\frac{C}{m}$ and $K_b=0\mathrm{.}512\frac{C}{m})$

$-5\mathrm{.}09C$

$-1\mathrm{.}02C$

$-2\mathrm{.}12C$

$-1\mathrm{.}45C$

$-2\mathrm{.}68C$