Magnesium Carbonate Dissociates to Magnesium Oxide and Carbon Dioxide at Elevated

question 35

Multiple Choice

Magnesium carbonate dissociates to magnesium oxide and carbon dioxide at elevated temperatures. A reaction vessel contains these compounds in equilibrium at 300 $\degree$ C. What will happen if the volume of the container is reduced by 25% at 300 $\degree$ C?

• A) The partial pressure of carbon dioxide present at equilibrium will increase.
• B) The partial pressure of carbon dioxide present at equilibrium will decrease.
• C) The partial pressure of carbon dioxide at equilibrium will be unchanged.
• D) The equilibrium constant will have to decrease to compensate for the decrease in volume.
• E) More information is needed in order to make a valid judgment.

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