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Van't Hoff factor of an electrolyte solution from its freezing point

The same question, asked 9 times: 2 May 2023 S2*, 10 May 2023 S1*, 11 May 2023 S1*, 16 May 2023 S1*, 12 May 2024 S2*, 13 May 2024 S2*, 23 Apr 2025 S1*, 17 Apr 2026 S1*, 13 May 2026 S1. Every wording below, oldest first.

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  1. Question 1

    2 May 2023 S2

    91
    Calculate van't Hoff factor of 0.2 m aqueous solution of an electrolyte if it freezes at −0.7 K-0.7\,\text{K}. Kf=1.86 K kg mol−1K_f = 1.86\,\text{K kg mol}^{-1}

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  2. Question 2

    10 May 2023 S1

    86
    0.2 molal aqueous solution of KCl freezes at −0.680∘C-0.680^\circ\text{C}. Calculate van't Hoff factor for this solution. Kf=1.86 K kg mol−1K_f=1.86\,\text{K kg mol}^{-1}

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  3. Question 3

    11 May 2023 S1

    56
    Calculate van't Hoff factor (i) of 0.2 m aqueous solution of an electrolyte if it freezes at −0.660-0.660 K. Kf=1.84K_f = 1.84 K kg mol−1^{-1}

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  4. Question 4

    16 May 2023 S1

    94
    Calculate van't Hoff factor of 0.15 M solution of electrolyte if it freezes at −0.5 K-0.5\,\text{K}. Kf=1.86 K kg mol−1K_f = 1.86\,\text{K kg mol}^{-1}

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  5. Question 5

    12 May 2024 S2

    96
    If 0.15 m aqueous solution of KCl freezes at −0.51°C-0.51°C, calculate van't Hoff factor of KCl (cryoscopic constant of water is 1.861.86 K kg mol⁻¹)

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  6. Question 6

    13 May 2024 S2

    58
    If 0.01 m aqueous solution of an electrolyte freezes at −0.056 K-0.056\ \text{K}. Calculate Van't Hoff factor for an electrolyte (cryoscopic constant of water =1.86 K kg mol−1=1.86\ \text{K kg mol}^{-1})

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  7. Question 7

    23 Apr 2025 S1

    85
    Calculate van't Hoff factor of aqueous solution of 0.18 m electrolyte that freezes at −0.54∘C-0.54^{\circ}C. ( KfK_{f} for solvent =1.86 K kg mol−1= 1.86\text{ }K\text{ }kg{\text{ }mol}^{- 1} )

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  8. Question 8

    17 Apr 2026 S1

    22
    Calculate van't Hoff factor for aqueous solution of 0.02 m formic acid if it freezes at -0.045 ∘C^\circ\mathrm{C}. [ KfK_f = 1.86 K kg mol−1\mathrm{mol^{-1}} and freezing point of water = 0 ∘C0\ ^\circ\mathrm{C} ]

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  9. Question 9

    13 May 2026 S1

    21
    A 0.10.1 molal aqueous solution of K3[Fe(CN)6]\mathrm{K_3[Fe(CN)_6]} freezes at −0.85 ∘-0.85\ ^\circC. If KfK_f for water is 1.86 K kg mol−11.86\ \mathrm{K\,kg\,mol^{-1}}, what is the van't Hoff factor for this solution?

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