Chemical equilibrium — Question 6

QUESTION 6

The equilibrium concentration of A is 2.8 × 10^-4 M and B is 1.2 × 10^-4 M.

() () A g B g > 0 ΔH

Which option represents the ratio of molecules present in a sample of the gaseous mixture when the temperature is decreased and a new equilibrium established?

(A) 8 molecules of A and 2 molecules of B

(B) 5 molecules of A and 5 molecules of B

(C) 3 molecules of A and 7 molecules of B

(D) 2 molecules of A and 8 molecules of B