A chemist is investigating the chemical system

Question

A chemist is investigating the chemical system  2NO(g)⇌ N2(g)+O2(g)

Initially, she places 1.6 mol of nitric oxide, 1.6 mol of nitrogen, and 0.60 mol of oxygen in a 1.00 L vessel. At equilibrium, the concentration of nitric oxide is 1.4 mol/L. Calculate the equilibrium constant, K, for this system.

a)0.25

b)1.03

c)0.85

d)None of these

e)40

Answer 1

2NO(g) <----> N₂(g) + O₂(g)

1.6...................1.6...........0.6......Initial

-2x....................+x...........+x.......Change

1.4....................1.7..........0.7......Equilibrium

K = [N₂][O₂]/[NO]² = (1.7)(0.7) / (1.4)²

K = 0.607 (none of the options is correct)