Methanol Can Be Synthesized by Combining Carbon Monoxide and Hydrogen

question 71

Multiple Choice

Methanol can be synthesized by combining carbon monoxide and hydrogen. CO(g) + 2H₂(g) ⇄ CH₃OH(g) ΔH°_rxn = −90.7 kJ
A reaction vessel contains these compounds at equilibrium. What effect will be seen when equilibrium is re-established after decreasing the temperature by 45°C?

• A)All the partial pressures will decrease.
• B)The partial pressure of methanol will decrease.
• C)The partial pressures of hydrogen and methanol will decrease.
• D)The partial pressure of hydrogen will increase.
• E)The partial pressure of carbon monoxide will decrease.

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