The reaction of hydrogen gas with carbon dioxide produces water vapor and carbon monoxide in the following equilibrium: H2(g) + CO2(g) >< H2O(g) + CO(g) Keq = 1.60

Question

If the equilibrium concentrations of both H2(g) and CO2(g) are 0.25 mol/L, the final equilibrium concentration would be;______

Cant seem to figure this one out. Help much appreciated.

Answer 1

H₂(g) + CO₂(g) <===> H₂O(g) + CO(g)

Keq = [H₂O][CO]/[H₂][CO₂]

1.60 = (x)(x) / (0.25)(0.25)

x² = 0.1

x = 0.32 mol/L (2 sig. figs.)