Liquid Solution · Chemistry · KCET

Among the following 0.1 m aqueous solutions, which one will exhibit the lowest boiling point elevation, assuming complete ionization of the compound in solution?

Variation of solubility with temperature t for a gas in liquid is shown by the following graphs. The correct representation is

180 g of glucose, $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6$, is dissolved in 1 kg of water in a vessel. The temperature at which water boils at 1.013 bar is _________ (given, $\mathrm{K}_{\mathrm{b}}$ for water is $052 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$. Boiling point for pure water is 373.15 K )

If $N_2$ gas is bubbled through water at 293 K , how many moles of $N_2$ gas would dissolve in 1 litre of water? Assume that $\mathrm{N}_2$ exerts a partial pressure of 0.987 bar.

[Given $\mathrm{K}_{\mathrm{H}}$ for $\mathrm{N}_2$ at 293 K is 76.48 K bar ]

Vapour pressure of a solution containing 18 g of glucose and 178.2 g of water at $100^{\circ} \mathrm{C}$ is (Vapour pressure of pure water at $100^{\circ} \mathrm{C}=760$ torr)

A mixture of phenol and aniline shows negative deviation from Raoult's law. This is due to the formation of

Which one of the following pairs will show positive deviation from Raoult's law?

For which one of the following mixtures is composition uniform throughout?

The swelling in feet and ankles of an aged person due to sitting continuously for long hours during travel, is reduced by soaking the feet in warm salt water. This is because of

A sample of water is found to contain $$5.85 \%$$ $$\left(\frac{w}{w}\right)$$ of $$A B$$ (molecular mass 58.5 ) and $$9.50 \%$$ $$\left(\frac{w}{w}\right) X Y_2$$ (molecular mass 95). Assuming $$80 \%$$ ionisation of $$A B$$ and $$60 \%$$ ionisation of $$X Y_2$$, the freezing point of water sample is [Given, $$K_f$$ for water $$1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$, Freezing point of pure water is $$273 \mathrm{~K}$$ and $$A, B$$ and $$Y$$ are monovalent ions.]

Solubility of a gas in a liquid increases with

The rise in boiling point of a solution containing $$1.8 \mathrm{~g}$$ of glucose in $$100 \mathrm{~g}$$ of solvent is $$0.1^{\circ} \mathrm{C}$$. The molal elevation constant of the liquid is

If $$3 \mathrm{~g}$$ of glucose (molar mass $$=180 \mathrm{~g}$$) is dissolved in $$60 \mathrm{~g}$$ of water at $$15^{\circ} \mathrm{C}$$, the osmotic pressure of the solution will be

Which of the following colligative properties can provide molar mass of proteins, polymers and colloids with greater precision?

Henry's law constant for the solubility of $$\mathrm{N}_2$$ gas in water at $$298 \mathrm{~K}$$ is $$1.0 \times 10^5 \mathrm{~atm}$$. The mole fraction of $$\mathrm{N}_2$$ in air is 0.8 . The number of moles of $$\mathrm{N}_2$$ from air dissolved in 10 moles of water at $$298 \mathrm{~K}$$ and $$5 \mathrm{~atm}$$ pressure is

Choose the correct statement.

The $$K_{\mathrm{H}}$$ value ($$\mathrm{K}$$ bar) of argon (I), carbondioxide (II), formaldehyde (III) and methane (IV) are respectively $$40.3,167, 1.83 \times 0^{-5}$$ and 0.413 at $$298 \mathrm{~K}$$. The increasing order of solubility of gas in liquid is

The vapour pressure of pure liquids $$A$$ and $$B$$ are 450 and $$700 \mathrm{~mm}$$ of $$\mathrm{Hg}$$ at $$350 \mathrm{~K}$$ respectively. If the total vapour pressure of the mixture is $$600 \mathrm{~mm}$$ of $$\mathrm{Hg}$$, the composition of the mixture in the solution is

Which of the following pair of solutions is isotonic?

Solute '$$X$$' dimerises in water to the extent of $$80\%$$. 2.5g of '$$X$$' in $$100 \mathrm{~g}$$ of water increases the boiling point by $$0.3^{\circ} \mathrm{C}$$. The molar mass of 'X' is $$[K_b=0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}]$$

A non-volatile solute, '$$A$$' tetramerises in water to the extent of $$80 \%.$$ $$2 .5 \mathrm{~g}$$ of '$$A$$' in $$100 \mathrm{~g}$$ of water, lower the freezing point by $$0.3^{\circ} \mathrm{C}$$. The molar mass of '$$A$$' in $$\mathrm{g}$$ is $$\left(K_f\right.$$ for water $$=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1})$$

Solution '$$A$$' contains acetone dissolved in chloroform and solution '$$B$$' contains acetone dissolved in carbon disulphide. The type of deviations from Raoult's law shown by solutions $$A$$ and $$B$$, respectively are

Relative lowering of vapour pressure of a dilute solution of glucose dissolved in $$1 \mathrm{~kg}$$ of water is 0.002 . The molality of the solution is