Question detail
What is the primary reason that increasing the pressure of reacting gases affects the rate of reaction?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Rate of reaction
Question
- A. It changes the chemical properties of the gases
- B. It increases the number of particles in the reaction
- C. It increases the concentration of the gas particles
- D. It decreases the activation energy required
Answer
It increases the concentration of the gas particles
Explanation
The correct answer is It increases the concentration of the gas particles. This answer directly addresses the question: What is the primary reason that increasing the pressure of reacting gases affects the rate of 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 Pressure Effects
Students often think that increasing pressure will always increase the rate of reaction without considering the specific reaction conditions.
Emphasize that increasing pressure increases the concentration of gas molecules, leading to more frequent collisions, which generally increases the reaction rate.
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