Question detail
What happens to the position of equilibrium when the pressure is decreased in a gaseous reaction?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reversible reactions and dynamic equilibrium
Question
- A. It shifts towards the side with fewer molecules of gas.
- B. It shifts towards the side with more molecules of gas.
- C. It remains unchanged.
- D. It increases the rate of the reaction.
Answer
It shifts towards the side with more molecules of gas.
Explanation
The correct answer is It shifts towards the side with more molecules of gas.. This answer directly addresses the question: What happens to the position of equilibrium when the pressure is decreased in a gaseous reaction? It matches the approved Chemistry 8462 learning objective and the linked subtopic. The other options are incorrect because they either change the rate, catalyst, reversible reaction, equilibrium, or graph context, or they do not answer the exact point being tested.
Common mistake
Misunderstanding Temperature Effects
Students often think that increasing temperature always increases the rate of reaction without considering the effect on equilibrium yield.
Remember that increasing temperature can favor the endothermic direction of a reversible reaction, which may not always lead to a higher yield of products.
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