The order of boiling point (B.P.) of the solu | vedclass

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

Question

(C) The elevation in boiling point $(\Delta T_b)$ is a colligative property given by the formula $\Delta T_b = i 	imes K_b 	imes m$,where $i$ is the

Vedclass · Accepted Answer

$I = II = III$

Vedclass · Answer

(C) The elevation in boiling point $(\Delta T_b)$ is a colligative property given by the formula $\Delta T_b = i 	imes K_b 	imes m$,where $i$ is the van't Hoff factor,$K_b$ is the ebullioscopic constant,and $m$ is the molality of the solution.For all three solutions,the solvent is $1 \ kg$ of $H_2O$ and the amount of solute is $1 \ mole$.Thus,the molality $(m)$ is the same for all three solutions $(m = 1 \ mol / 1 \ kg = 1 \ m)$.Glucose,urea,and the non-electrolyte non-volatile unknown solute $A$ are all non-electrolytes,so their van't Hoff factor $(i)$ is $1$ for all of them.Since $i$,$K_b$,and $m$ are identical for all three solutions,the elevation in boiling point $(\Delta T_b)$ will be the same.Therefore,the boiling point of the solutions will be equal: $I = II = III$.

The order of boiling point $(B.P.)$ of the solutions formed is:

Similar Questions

Exactly $1 \ g$ of urea dissolved in $75 \ g$ of water gives a solution that boils at $100.114 \ ^oC$ at $760 \ torr$. The molecular weight of urea is $60.1$. The boiling point elevation constant for water is

An aqueous solution containing $1 \ g$ of urea boils at $100.25 \ ^oC$. The aqueous solution containing $3 \ g$ of glucose in the same volume will boil at ........ $^oC$. (Molecular weight of urea and glucose are $60$ and $180$ respectively)

The molal elevation constant of water is $0.513 \ ^oC \ kg \ mol^{-1}$. If $0.1 \ mol$ of sugar is dissolved in $200 \ g$ of water,at what temperature $(^oC)$ will the solution start to boil under $1 \ bar$ pressure?

If $10 \ g$ of a solute (molar mass $= 100 \ g/mol$) is dissolved in $100 \ g$ of water,then the molal elevation constant $K_b$ of the solvent will be equal to:

Which among the following solutions has minimum boiling point elevation?

Vedclass Test Series

Exam Paper Generator

Online Exam Module