Methanol Can Be Synthesized by Combining Carbon Monoxide and Hydrogen

question 68

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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Definitions:

Average Variable Cost

The total variable costs (such as labor and materials) divided by the quantity of output produced.

Average Total Cost

The total cost of production (fixed plus variable costs) divided by the total quantity of output produced, indicating the cost of producing each unit of output.

Variable Costs

Costs that vary directly with the level of production or output, such as materials and labor costs.

Fixed Costs

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