COMEDK 2026 Morning Shift | Liquid Solution Question 6 | Chemistry

What is the percentage dissociation of 0.8 ml of Acetic acid (density is $1.04 \mathrm{~g} / \mathrm{ml}$ ) which is dissolved in 1.2 L of water if the observed Depression in freezing point is 0.0228 K ? ( $\mathrm{K}_{\mathrm{f}}$ for water $=1.86 \mathrm{Kkg} / \mathrm{mol}$.)

COMEDK 2026 Morning Shift

MCQ (Single Correct Answer)

-0

Identify the correct statement

A hypotonic solution is more concentrated with respect to the other solution separated from it by a semi permeable membrane

At the freezing point of a solution containing a non-volatile solute, the vapour pressure of the liquid solvent becomes less than that of the solid solvent

In case of dissociation of solute particles in a solution, the van't Hoff factor is more than unity because the observed molar mass has a lesser value

The molal boiling point elevation constant for a solvent is directly proportional to its enthalpy of vaporisation

COMEDK 2026 Morning Shift

MCQ (Single Correct Answer)

-0

0.02 M solution of sucrose is isotonic with 0.008 M solution of sodium sulphate. What is the percentage dissociation of the electrolyte?

COMEDK 2025 Evening Shift

MCQ (Single Correct Answer)

-0

An aqueous solution of an electrolyte $\mathrm{A}_3 \mathrm{~B}$ is prepared by dissolving 0.5625 g in 750 ml of water and is found to be $80 \%$ ionised. If $\mathrm{K}_{\mathrm{b}}$ for water is $0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$, calculate the boiling point of the solution at 1.0 atm pressure.

374.33 K

371.68 K

373.18 K

377.2 K

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