Answer to Question #89351 in Physical Chemistry for Ravi

Question

Consider the dissociation of SO3,NH3,PCL5,N2O4,in four different vessels which of the following is correct?
(a) the average molar mass of equilibrium mixture of(SO3+SO2+O2) is 50.
(b) the average molar mass of equilibrium mixture of (NH3+N2+H2) is 19
(c) the average molar mass of equilibrium mixture of (pcl5+pcl3+cl2) is 120
(d) the average molar mass of equilibrium mixture of (N2O4+NO2) is 40.

Answer 1

2SO3 = 2SO2 + O2; M =64;

2NH3 = N2 + 3H2; M = 11;

PCl5 = PCl3 + Cl2; M = 139;

N2O4 = 2NO2; M = 40

Answer: (d) the average molar mass of equilibrium mixture of (N2O4+NO2) is 40.