The reduction of carbon dioxide by hydrogen gas takes place at 420°C to produce water vapor and carbon monoxide. The equation for this reaction at equilibrium is shown below.
H2(g) + CO2(g) ↔ H2O(g) + CO(g) .
Which of the following changes in concentration occur when more water vapor is added to the system under equilibrium conditions?
A) [H2] decreases , [CO2] decreases, [CO] increases
B) [H2] decreases, [CO2] decreases, [CO] increases
C) [H2] increases, [CO2 ] increases, [CO] increases
D) [H2] increases, [CO 2] increases, [CO] increases
Correct Answer:
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