List of top Chemistry Questions on Osmotic pressure

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 solutions is isotonic with human blood?

When blood cells are placed in \(1%\) (w/v) NaCl aqueous solution, what will happen to the cells?

The \(5%\) solution of cane sugar \((\text{molecular weight}=342)\) is isotonic with \(1%\) solution of substance \(X\). The molecular weight of \(X\) is:

The average osmotic pressure of human body is \(7.8\) bar at \(37^\circ C\). What is the concentration of an aqueous solution of \(NaCl\) that could be used in bloodstream?

Which of the following solutions has highest osmotic pressure?

When blood cells are placed in 1% (w/v) NaCl aqueous solution:

When blood cells are placed in 1% (w/v) NaCl aqueous solution:

When blood cells are placed in 1% (w/v) NaCl aqueous solution:

When blood cells are placed in 1% (w/v) NaCl aqueous solution:

Consider the following statements regarding osmotic pressure:
(A) Molar mass of a protein can be determined using the osmotic pressure method.
(B) The osmotic pressure is proportional to the molarity.
(C) Reverse osmosis occurs when a pressure larger than osmotic pressure is applied to the concentrated solution side.
(D) Edema occurs due to retention of water in tissue cells as a result of osmosis.
Choose the correct statements with reference to osmotic pressure:

Arrange the following in increasing order of their osmotic pressure generation at 298 K:
(The cell wall is permeable to water and not to the solute molecules)
(A) If a cell containing 0.5 moles of solute dissolved in 1 L of water is immersed in pure water.
(B) If a cell containing 0.25 moles of solute dissolved in 1 L of water is immersed in pure water.
(C) If a cell containing 0.1 moles of solute dissolved in 0.01 L of water is immersed in pure water.
(D) If a cell containing 0.2 moles of solute dissolved in 0.05 L of water is immersed in pure water.
Choose the correct answer from the options given below:

The plot of osmotic pressure II) vs concentration (mol L^–1 ) for a solution gives a straight line with slope 25.73 L bar mol^–1 . The temperature at which the osmotic pressure measurement is done is
(Use R = 0.083 L bar mol–1 K^–1 )

When blood cells are placed in 1%(W/V) NaCl aquem solution

Osmotic pressure of solution formed by mixing 50 ml of 0.2 M urea and 50 ml of 0.4 m glucose aqueous solution at 298 K will be : (R=0.083 L atm K^-1 mol^-1)

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