For the Equilibrium System: CO₂(g)+ H₂(g) CO(g)+ H₂O(g)

question 35

Multiple Choice

For the equilibrium system: CO₂(g) + H₂(g) CO(g) + H₂O(g) H = +42 kJ/mol
K equals 1.6 at 1260 K.If 0.15 mol each of CO₂,H₂,CO,and H₂O (all at 1260 K) were placed in a 1.0-L thermally insulated vessel that was also at 1260 K,then as the system came to equilibrium:

• A)The temperature would decrease and the mass of CO₂ would increase.
• B)The temperature would decrease and the mass of CO₂ would decrease.
• C)The temperature would remain constant and the mass of CO₂ would increase.
• D)The temperature would increase and the mass of CO₂ would increase.
• E)The temperature would increase and the mass of CO₂ would decrease.

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