Arrange the following solutions in order of t | vedclass

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

Question

(A) The elevation in boiling point is given by $\Delta T_{b} = i \cdot K_{b} \cdot m$,where $i$ is the van't Hoff factor and $m$ is the molality (prop

Vedclass · Accepted Answer

$ii < i < iii < iv$

Vedclass · Answer

(A) The elevation in boiling point is given by $\Delta T_{b} = i \cdot K_{b} \cdot m$,where $i$ is the van't Hoff factor and $m$ is the molality (proportional to concentration $C$).Since $K_{b}$ is constant for the solvent,$\Delta T_{b} \propto i \cdot C$.Solution$i \cdot C$$(i) \ 10^{-4} \ M \ NaCl$$2 	imes 10^{-4}$$(ii) \ 10^{-4} \ M \ 	ext{Urea}$$1 	imes 10^{-4}$$(iii) \ 10^{-3} \ M \ NaCl$$2 	imes 10^{-3}$$(iv) \ 10^{-2} \ M \ NaCl$$2 	imes 10^{-2}$Comparing the values of $i \cdot C$: $1 	imes 10^{-4} Therefore,the order of increasing boiling points is $(ii) < (i) < (iii) < (iv)$.

Arrange the following solutions in order of their increasing boiling points.
$(i) \ 10^{-4} \ M \ NaCl$ $(ii) \ 10^{-4} \ M \ \text{Urea}$ $(iii) \ 10^{-3} \ M \ NaCl$ $(iv) \ 10^{-2} \ M \ NaCl$

Similar Questions

Boiling point of water at $750 \, mm \, Hg$ is $99.63^{\circ} \, C$. How much sucrose is to be added to $500 \, g$ of water such that it boils at $100^{\circ} \, C$?

If an aqueous solution contains $9 \%$ and $1 \%$ $(w/w)$ of two non-volatile non-electrolytes $X$ (molecular weight $180$) and $Y$ (molecular weight $50$) respectively,the boiling point of the solution in ${ }^{\circ} C$ is approximately $(K_b = 0.52 \ K \ kg \ mol^{-1})$

Which among the following solutions has minimum boiling point elevation?

If molality of a solution is $0.05 \ m$ and elevation in boiling point is $0.16 \ K$,then what is the molal elevation constant of the solvent?

$5 \ g$ of a non-volatile organic substance with molar mass $M_A$ is dissolved in $200 \ g$ of tetrahydrofuran. If $K_b$ is the molal elevation constant of tetrahydrofuran,then $\Delta T_b$ will be:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following solutions in order of their increasing boiling points.$(i) \ 10^{-4} \ M \ NaCl$ $(ii) \ 10^{-4} \ M \ \text{Urea}$ $(iii) \ 10^{-3} \ M \ NaCl$ $(iv) \ 10^{-2} \ M \ NaCl$