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A mixture containing CO(g), H2O(g), CO2(g), and H2(g) is allowed to reach equilibrium at 120 °C in aEquilibrium Chemistry Question

Question

A mixture containing CO(g), H2O(g), CO2(g), and H2(g) is allowed to reach equilibrium at 120 °C in a container that maintains a constant total pressure of 1.0 bar.
CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
5.0 g of H2O is added to this container, which is allowed to reattain equilibrium (still at 120 °C and 1 bar total pressure). How does the partial pressure of H2(g) change as a result of the addition of H2O?

A.

The partial pressure of H2(g) increases.

B.

The partial pressure of H2(g) decreases.

C.

The partial pressure of H2(g) does not change.

D.

The effect on the partial pressure of H2(g) cannot be determined from the information given.

✓ Correct
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