Question 23 of 171

The freezing point of 0.02 mole fraction of solution of acetic acid in benzene is 277.4K. Acetic acid exists partly as a dimer

Calculate the equilibrium constant for the dimerization. The melting point of pure benzene is 278.4K, its heat of fusion is 10.042 KJ mol-1.

(a) 0.79

(b) 2.79

(c) 1.14

(d) 3.12