A mixture of 1.57 mol of `N_2`, 1.92 mol of H, and 8.13 mol of `NH_3` is there in a 20 L reaction vessel at 500 K. At this temperature, the equilibrium constant, `K_c` for the reaction `N_2(g) + 3H_2(g) iff 2NH_3(g)` is `1.7 xx 10^2`. Is the reaction mixture at equilibrium ? If not, what is the direction of the net reaction?

Options

A. not at equilibrium, forward shift
B. not at equilibrium, backward shift
C. cannot be predicted
D. in equilibrium

Answer

B