Which one of the following statements is false?
- ARaoult's law for a mixture of two liquids states that the vapour pressure of a component over a solution is proportional to its mole fraction.
- BThe osmotic pressure $(\pi)$ of a solution is given by the equation $\pi = iMRT$,where $M$ is the molarity of the solution.
- CThe correct order of osmotic pressure for $0.01 \ M$ aqueous solutions of each compound is $BaCl_2 > KCl > CH_3COOH > Sucrose$.
- DTwo sucrose solutions of the same molality prepared in different solvents will have the same freezing point depression.
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$1 \, \text{mole}$ of liquid $A$ and $2 \, \text{moles}$ of liquid $B$ make a solution having an observed vapour pressure of $42 \, \text{torr}$. The vapour pressures of pure $A$ and pure $B$ are $45 \, \text{torr}$ and $36 \, \text{torr}$ respectively. The described solution:
Medium
View SolutionThe $pH$ of a $0.1 \ M$ monobasic acid solution is $2$. Its osmotic pressure at $T$ Kelvin temperature is ............. $RT$.
Medium
View SolutionMatch List-$I$ with List-$II$.
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
Choose the correct answer from the options given below:
| 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 |
Choose the correct answer from the options given below:
For a dilute solution containing $2.5 \ g$ of a non-volatile non-electrolyte solute in $100 \ g$ of water,the elevation in boiling point at $1 \ atm$ pressure is $2^{\circ} C$. Assuming the concentration of solute is much lower than the concentration of solvent,the vapour pressure ($mm$ of $Hg$) of the solution is (take $K_{b}=0.76 \ K \ kg \ mol^{-1}$)
DifficultIIT 2012
View SolutionAn aqueous solution of urea:
Medium
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