Which of the following aqueous solutions has | vedclass

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

Question

(B) The boiling point elevation is given by $\Delta T_b = i 	imes K_b 	imes m$. The solution with the highest boiling point will have the highest va

Vedclass · Accepted Answer

$0.2 \ m$ $Ba(NO_3)_2$

Vedclass · Answer

(B) The boiling point elevation is given by $\Delta T_b = i 	imes K_b 	imes m$. The solution with the highest boiling point will have the highest value of the van't Hoff factor $(i)$ multiplied by molality $(m)$.For $A$: $i = 2$ $(NaCl ightarrow Na^+ + Cl^-)$,$m = 0.1$,so $i 	imes m = 0.2$.For $B$: $i = 3$ $(Ba(NO_3)_2 ightarrow Ba^{2+} + 2NO_3^-)$,$m = 0.2$,so $i 	imes m = 0.6$.For $C$: $i = 4$ $(Na_3PO_4 ightarrow 3Na^+ + PO_4^{3-})$,$m = 0.01$,so $i 	imes m = 0.04$.For $D$: $i = 2$ $(KNO_3 ightarrow K^+ + NO_3^-)$,$m = 0.03$,so $i 	imes m = 0.06$.Comparing the values,$0.6$ is the highest,therefore $0.2 \ m$ $Ba(NO_3)_2$ has the highest boiling point.

Which of the following aqueous solutions has the highest boiling point?

Similar Questions

For a given electrolyte $A_xB_y$,the relationship between the degree of dissociation '$\alpha$' and the van't Hoff factor '$i$' is ........

In equimolar solutions of glucose,$NaCl$,and $BaCl_2$,the order of osmotic pressure is as follows:

At a constant temperature,the vapor pressures of aqueous solutions of $Na_2SO_4$,urea,$AlCl_3$,and $1.2 \, m \, KCl$ are approximately equal. The molalities of the aqueous solutions of $Na_2SO_4$,urea,and $AlCl_3$ are,respectively: (Assume $100 \%$ dissociation of the solute)

The van't Hoff factor $(i)$ for a dilute aqueous solution of the strong electrolyte barium hydroxide is

$17.4\% (W/V)$ of potassium sulphate $(mol. wt. = 174)$ is isotonic with $4\% (W/V)$ aqueous solution of $NaOH$. If $NaOH$ is $100\%$ ionised,the degree of ionisation of potassium sulphate is $.......... \%$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module