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Q.

The molal depression constant for a solvent is 5k kg/mol. The depression in the freezing point of the solvent for 0.04 mol/kg solution of K2SO4 is (assume complete dissociation of the electrolyte)

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a

0.20 K

b

15 K

c

0.60 K

d

0.12 K

answer is C.

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Detailed Solution

ΔTf=i Kf×m=3×5×0.04=0.6 K

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