WBJEE 2013 Chemistry Solved Paper

Question : 39 of 60

Marks: +1, -0

The measured freezing point depression for a 0.1 m aqueous CH3COOH solution is 0.19°C. The acid dissociation constant Ka at this concentration will be (Given Kf, the molal cryoscopic constant = 1.86 Kkgmol–1)