Which aqueous solution has the minimum freezi | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The freezing point depression is given by $\Delta T_f = i 	imes K_f 	imes m$. The freezing point of the solution is $T_f = T_f^\circ - \Delta T_

Vedclass · Accepted Answer

$0.01 \ M \ NaCl$

Vedclass · Answer

(A) The freezing point depression is given by $\Delta T_f = i 	imes K_f 	imes m$. The freezing point of the solution is $T_f = T_f^\circ - \Delta T_f$. To have the minimum freezing point,the solution must have the maximum value of the van't Hoff factor $(i)$ multiplied by molality $(m)$.$A: 0.01 \ M \ NaCl \implies i=2, m=0.01, i 	imes m = 0.02$$B: 0.005 \ M \ C_2H_5OH \implies i=1, m=0.005, i 	imes m = 0.005$$C: 0.005 \ M \ MgI_2 \implies i=3, m=0.005, i 	imes m = 0.015$$D: 0.005 \ M \ MgSO_4 \implies i=2, m=0.005, i 	imes m = 0.010$Comparing the values of $i 	imes m$,$0.01 \ M \ NaCl$ has the highest value,therefore it will have the maximum depression in freezing point and the minimum freezing point.

Which aqueous solution has the minimum freezing point?

Similar Questions

When an aqueous solution of glucose is frozen,which crystals will separate out first?

An aqueous solution of a weak monobasic acid containing $0.1 \text{ g}$ in $21.7 \text{ g}$ of water freezes at $272.813 \text{ K}$. If the value of $K_f$ for water is $1.86 \text{ K kg/mol}$,what is the molecular mass of the monobasic acid in $\text{g/mol}$?

What is molal depression constant? Derive an equation.

$CaCl_2$ is preferred over $NaCl$ for clearing ice on roads,particularly in very cold countries. This is because:

In winter,the normal temperature in Kullu valley was found to be $-11\,^{\circ}C$. Is a $28\%$ (by mass) aqueous solution of ethylene glycol suitable for a car radiator? $K_f$ for water $= 1.86\, K\, kg\, mol^{-1}$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module