Q44 / 150 · MHT CET 2022 (07 Aug Shift 2) · Chemistry

Find the freezing point depression of solution having molality $0.25 \mathrm{~mol} \mathrm{~kg}^{-1}$. $\left(\mathrm{K}_{\mathrm{f}}=4.0\right)$

  • A
    $2.5 \mathrm{~K}$
  • B
    $3.0 \mathrm{~K}$
  • C
    $2.0 \mathrm{~K}$
  • Correct answer
    D
    $1.0 \mathrm{~K}$

Solution

$\Delta \mathrm{T}_{\mathrm{f}}=\mathrm{K}_{\mathrm{f}} \mathrm{m}=4 \mathrm{x} 0.25=1.0 \mathrm{~K}$

Hence, the correct answer is option: 'D'.

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