Question

At 2000°C, 5.0×10-3 mol CO2 is introduced into a 1.0 L container and the following reaction comes to equilibrium:

2CO2(g) <-> 2CO(g) + O2(g)

Kc = 6.4×10-7

a. Calculate the equilibrium concentrations of CO and O2.

b. What fraction of the CO2 is decomposed at equilibrium? (37% or 6.3%)

Answer 1

Set up an ICE chart, substitute into the Kc expression, and solve for the concns. Post your work if you get stuck.

Answer 2

ddv

Answer 3

A.
1.6×±0^-4 M
B.
6.3%
C.
3.2×±0^-4 M