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Cryoscopic or ebullioscopic constant from measured data

This type of question, asked 7 times: 9 May 2023 S1, 9 May 2024 S2, 11 May 2024 S2, 19 Apr 2025 S2, 26 Apr 2025 S2, 15 Apr 2026 S2, 17 Apr 2026 S2. All 7 questions below, oldest first.

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  1. Question 1

    9 May 2023 S1

    58
    Calculate the cryoscopic constant of solvent when 2.5 gram solute is dissolved in 35 gram solvent lowers its freezing point by 3 K. (molar mass of solute is 117 g mol−1117\,\text{g\,mol}^{-1})

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  2. Question 2

    9 May 2024 S2

    58
    A solution of nonvolatile solute is obtained by dissolving 1 g in 100 g solvent, decreases its freezing point by 0.3 K. Calculate cryoscopic constant of solvent if molar mass of solute is 60 g mol−1^{-1}.

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  3. Question 3

    11 May 2024 S2

    69
    A solution of nonvolatile solute is obtained by dissolving 1.5 g in 30 g solvent has boiling point elevation 0.65 K. Calculate the molal elevation constant if molar mass of solute is 150 g mol−1150\text{ g mol}^{-1}.

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  4. Question 4

    19 Apr 2025 S2

    75
    Calculate the molal elevation constant of solvent if boiling point of 0.12 m solution is 319.8 K (Boiling point of solvent =319.5 K= 319.5\text{ }K )

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  5. Question 5

    26 Apr 2025 S2

    56
    Calculate cryoscopic constant of solvent if depression in freezing point of 0.18 m solution of nonvolatile solute is 0.2 K

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  6. Question 6

    15 Apr 2026 S2

    22
    If a 0.4 molal solution of a nonvolatile solute in organic solvent decreases its freezing point by 2.4 K., then the molal depression constant of solvent will be

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  7. Question 7

    17 Apr 2026 S2

    23
    Calculate the cryoscopic constant of a solvent if depression in freezing point of 0.30.3 m solution of nonelectrolyte is 0.480.48 K

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