Identify the correct statement from the follo | vedclass

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

Question

(B) Osmotic pressure is a colligative property,not osmosis itself. Thus,statement $A$ is incorrect.The vapour pressure of a solution containing a non-

Vedclass · Accepted Answer

The vapour pressure of a solution containing a non-volatile solute is lower than that of the pure solvent at any given temperature.

Vedclass · Answer

(B) Osmotic pressure is a colligative property,not osmosis itself. Thus,statement $A$ is incorrect.The vapour pressure of a solution containing a non-volatile solute is lower than that of the pure solvent due to the decrease in the number of solvent molecules at the surface. Thus,statement $B$ is correct.Osmotic pressure is a colligative property dependent on the number of particles. $NaCl$ dissociates into $2$ ions ($Na^+$ and $Cl^-$),while sucrose does not dissociate. Therefore,the osmotic pressure of $0.1 \ M$ $NaCl$ is higher than $0.1 \ M$ sucrose. Thus,statement $C$ is incorrect.The boiling point of a solution containing a non-volatile solute is higher than that of the pure solvent (elevation in boiling point). Thus,statement $D$ is incorrect.

List-$I$	List-$II$
$A$. van't Hoff factor,$i$	$I$. Cryoscopic constant
$B$. $k_{f}$	$II$. Isotonic solutions
$C$. Solutions with same osmotic pressure	$III$. $\frac{\text{Normal molar mass}}{\text{Abnormal molar mass}}$
$D$. Azeotropes	$IV$. Solutions with same composition of vapour above it

Identify the correct statement from the following properties.

Similar Questions

At $80^o C$,the vapor pressure of pure liquid $A$ is $520 \ mm \ Hg$ and that of pure liquid $B$ is $1000 \ mm \ Hg$. If a mixture of $A$ and $B$ boils at $80^o C$ and $1 \ atm$ pressure,the mole percentage of $A$ in the mixture is ........... $(1 \ atm = 760 \ mm \ Hg)$.

$1 \, \text{mole}$ of each of $A$ and $B$ form an ideal solution of vapour pressure $100 \, \text{mm Hg}$. Addition of $2 \, \text{moles}$ of $B$ to it decreases the vapour pressure by $20 \, \text{mm Hg}$. The vapour pressure of $A$ and $B$ in pure state are,respectively:

Elevation in boiling point for $1.5 \, m$ solution of glucose in water is $4 \, K$. The depression in freezing point for $4.5 \, m$ solution of glucose in water is $4 \, K$. The ratio of molal elevation constant to molal depression constant $(K_{b} / K_{f})$ is $....$

Vedclass Test Series

Exam Paper Generator

Online Exam Module