Q.

When 9.45g of ClCH2COOH is added to 500ml of water; it’s freezing point drops by 0.5oC. 

The dissociation constant of ClCH2COOH is x×103. The value of x is_____ [Kf(H2O)=1.86Kkgmol1]

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answer is 36.

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Detailed Solution

Given ΔTf=0.5oC,  Kf=1.86Kkg/mol

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When 9.45g of ClCH2COOH is added to 500ml of water; it’s freezing point drops by 0.5oC. The dissociation constant of ClCH2COOH is x×10−3. The value of x is_____ [Kf(H2O)=1.86K kg mol−1]