Solutions PYQs - Last 10 Years

Two volatile liquids $\mathbf{A}$ and $\mathbf{B}$ form an ideal solution. Consider a 5 molal solution of $\mathbf{B}$ in $\mathbf{A}$ inside a closed container having a total vapour pressure of 100 mm Hg at 300 K . The vapour pressure of p...

Two volatile liquids $\mathbf{A}$ and $\mathbf{B}$ form an ideal solution. Consider a 5 molal solution of $\mathbf{B}$ in $\mathbf{A}$ inside a closed container having a total vapour pressure of 100 mm Hg at 300 K . The vapour pressure of p...

In a solvent $\mathbf{S}$, a compound $\mathbf{B}$ is partially dissociated into $\mathbf{C}$ and $\mathbf{D}$ as given below :
\(\mathbf{B} \rightleftharpoons 2 \mathbf{C}+2 \mathbf{D}\)
$\mathbf{B}, \mathbf{C}$ and $\mathbf{D}$ are non-...

At 300 K , an ideal dilute solution of a macromolecule exerts osmotic pressure that is expressed in terms of the height $(h)$ of the solution (density $=1.00 \mathrm{~g} \mathrm{~cm}^{-3}$ ) where $h$ is equal to 2.00 cm . If the concentrat...

Vessel-1 contains $\mathbf{w}_2 \mathrm{~g}$ of a non-volatile solute $\mathbf{X}$ dissolved in $\mathbf{w}_1 \mathrm{~g}$ of water. Vessel- 2 contains $\mathbf{w}_2 \mathrm{~g}$ of another non-volatile solute $\mathbf{Y}$ dissolved in $\ma...

$50 \mathrm{~mL}$ of 0.2 molal urea solution (density $=1.012 \mathrm{~g} \mathrm{~mL}^{-1}$ at $300 \mathrm{~K}$ ) is mixed with $250 \mathrm{~mL}$ of a solution containing $0.06 \mathrm{~g}$ of urea. Both the solutions were prepared in th...

An aqueous solution is prepared by dissolving $0.1 \mathrm{~mol}$ of an ionic salt in $1.8 \mathrm{~kg}$ of water at $35^{\circ} \mathrm{C}$. The salt remains $90 \%$ dissociated in the solution. The vapour pressure of the solution is $59.7...

The value of | y | is ________.

The value of x is ________.

Liquids A and B form ideal solution for all compositions of A and B at 25\(^\circ\)C. Two such solutions with 0.25 and 0.50 mole fractions of A have the total vapour pressure of 0.3 and 0.4 bar, respectively. What is the vapour pressure of...

On dissolving 0.5 g of a non-volatile non-ionic solute to 39 g of benzene, its vapor pressure decreases from 650 mmHg to 640 mmHg. The depression of freezing point of benzene (in K) upon addition of the solute is .............(Given data: M...

Liquids A and B form ideal solution over the entire range of composition. At temperature \(T,\) equimolar binary solution of liquids \(A\) and \(B\) has vapor pressure \(45\) \(Torr.\) At the same temperature, a new solution of \(A\) and ...

The plot given below shows \(P-T\) curves (where \(P\) is the pressure and \(T\) is the temperature) for two solvents \(X\) and \(Y\) and isomolal solutions of \(NaCl\) in these solvents. \(NaCl\) completely dissociates in both the solvents...

Pure water freezes at \(273\) \(K\) and \(1\) bar. The addition of \(34.5\) \(g\) of ethanol to \(500\) \(g\) of water changes the freezing point of the solution. Use the freezing point depression constant of water as \(2\) kg $$mo{l^{ - 1}...

For a solution formed by mixing liquids \(L\) and \(M,\) the vapor pressure of \(L\) plotted against the mole fraction of \(M\) in solution is shown in the following figure. Here \({X_L}\) and \({X_M}\) represent mole fractions of \(L\) and...