Q.

The freezing point depression constant (Kf) of benzene is 5.12 K kg mol-1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off up to two decimal places):

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answer is 2.

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Detailed Solution

Kf=5.12 K kgmol−1ΔTf=? m=0.078mΔTf=Kf×m =5.12×0.078 =0.399=0.40K

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