Chemistry - Liquid Solution Question with Solution | TestHub

The depression in freezing point is given by the formula:

$\Delta T_f=i\times K_f\times m$

Given:
van't Hoff factor, $i=1.1$
Cryoscopic constant, $K_f=1.86{\text{ K kg mol}}^{-1}$
Molality, $m=0.01\text{ m}$

Substituting the given values into the formula:

$\Delta T_f=1.1\times 1.86\times 0.01$

$\Delta T_f=0.02046\text{ K}$

Rounding off to three decimal places, we get $0.020\text{ K}$.

Answer: $0.020\mathrm{K}$