If the solution of mercuric cyanide of strength 3 g / L has an osmotic pressure $0.3092 \times 10^5 Nm^{–2 }$ at 298 K, what is the apparent molecular weight and degree of dissociation of $Hg(CN)_2$ respectively ? (Hg = 200.61, C = 12 , N = 14)

Answer 1

240.2, 2.45%

Hence (A) is the correct answer.