List of top Chemistry Questions on Osmotic pressure asked in AP EAPCET

1.0 g of a non-electrolytic and non-volatile solute (X) was dissolved in 20.4 g of water. At 760 mm Hg the freezing point of solution was found to be \(-1.05^\circ C\). The molar mass (in g mol\(^{-1}\)) of the solute is \((K_f(H_2O)=1.86\,K\,kg\,mol^{-1})\)

At \(27^{\circ}C\), x g of \(C_6H_{12}O_6\) (molar mass = \(180 \text{ g mol}^{-1}\)) and y g of a non-volatile, non-electrolyte (molar mass = \(92 \text{ g mol}^{-1}\)) were present separately in 1.0 L solutions. The osmotic pressure of two solutions is equal. What is x/y?

What mass (in g) of glycerol is required to produce the same anti-freezing effect in 1.0 L of water as that of 20 g of NaCl in 1.0 L of water? (molar mass of glycerol = 92 g mol\(^{-1}\), assume NaCl is 97% dissociated)

At T(K), 0.004 M $Na_2SO_4$ solution is isotonic with 0.01 M glucose solution. The degree of dissociation of $Na_2SO_4$ is:

An aqueous solution of a non-volatile and non-electrolytic solute boils at $100.5^{\circ}C.$ What will be the freezing point of the same solution? (Given $K_{b}=0.512~K$ kg $mol^{-1}$ and $K_{f}=1.86~K$ kg mol$^{-1}$)

The osmotic pressure of a solution is given by the relation

A solution of urea in water has a boiling point of 100.18°C. What is the freezing point of the same solution if \( K_f \) and \( K_b \) of water are 1.86 and 0.52 K kg mol\(^{-1}\) respectively?

Which of the following condition is correct for reverse osmosis?
\[ [C = \text{Concentration of solution in mol L}^{-1}, \; T = \text{Temperature in Kelvin scale}, \; n = \text{number of moles of solute}] \]

Which of the following pair of solutions is isotonic?
\[ A.\ 18\,g/L\ \text{of glucose solution and }6\,g/L\ \text{of urea solution} \] \[ B.\ 10\,g/L\ \text{of glucose solution and }10\,g/L\ \text{of urea solution} \] \[ C.\ 0.01\,M\ NaOH\ \text{solution and }0.02\,M\ \text{glucose solution} \] \[ D.\ 0.01\,M\ NaCl\ \text{solution and }0.01\,M\ \text{glucose solution} \] (Assume that NaCl undergoes complete dissociation)

A solution containing \(6.0\;g\) of urea is isotonic with a solution containing \(10\;g\) of a non-electrolytic solute \(X\). The molar mass of \(X\) (in \(g\;mol^{-1}\)) is

\(x\%\;(w/v)\) solution of urea is isotonic with \(4\%\;(w/v)\) solution of a non-volatile solute of molar mass \(120\;g\;mol^{-1}\). The value of \(x\) is