AP and TS EAMCET Medical Model Paper 10

At 25°C 60 g of ethanoic acid is dissolved in 1 kg of benzene. The solution shows a depression in freezing point 2.94°C. The molal depression constant (Kf) for benzene is 4.9 K kg mol‌−1. The association constant (equilibrium constant Kc) of 2CH3COOH(Solution)⇌(CH3COOH)2(Solution) is