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Molal depression constant for a solvent is 4.0 K kg mol –1 . The depression in the freezing point of the solvent for 0.03 mol kg –1 solution of K 2 OS 4 is : (Assume complete dissociation of the electrolyte)

1. 0.36 K
2. 0.18 K
3. 0.12 K
4. 0.24 K

Correct answer: 0.36 K

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