Molal depression constant for a solvent is

Question:

Molal depression constant for a solvent is $4.0 \mathrm{~kg} \mathrm{~mol}^{-1}$. The depression in the freezing point of the solvent for $0.03 \mathrm{~mol} \mathrm{} \mathrm{kg}^{-1}$ solution of $\mathrm{K}_{2} \mathrm{SO}_{4}$ is :

(Assume complete dissociation of the electrolyte)

  1. $0.12 \mathrm{~K}$

  2. $0.36 \mathrm{~K}$

  3. $0.18 \mathrm{~K}$

  4. $0.24 \mathrm{~K}$


Correct Option: , 2

Solution:

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