Question detail
According to Le Chatelier's Principle, what happens to a gaseous equilibrium when the pressure is decreased?
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. The equilibrium shifts towards the side with fewer molecules of gas.
- B. The equilibrium shifts towards the side with more molecules of gas.
- C. The equilibrium remains unchanged.
- D. The reaction rate increases.
Answer
The equilibrium shifts towards the side with more molecules of gas.
Explanation
The correct answer is The equilibrium shifts towards the side with more molecules of gas.. This answer directly addresses the question: According to Le Chatelier's Principle, what happens to a gaseous equilibrium when the pressure is decreased? 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 decreasing pressure will always favor the reactants in a reaction, regardless of the number of gas molecules involved.
Remember that decreasing pressure favors the side of the equilibrium with more molecules of gas. Always check the balanced equation to determine which side has more gas molecules.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.