JEE Chemistry ยท Easy

Solutions and Colligative Properties: Molality MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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MolalityEasyQuestion 750003

Question

Molality (m) is temperature-independent because:
  1. A
    It uses mass (kg) of solvent, not volume
    Correct
  2. B
    It uses moles of solvent
  3. C
    It uses density
  4. D
    It is always 1 mol/kg

Correct answer

It uses mass (kg) of solvent, not volume

Explanation

Molality = moles of solute / mass of solvent in kg. Mass does not change with temperature, so molality is temperature-independent.