Question detail
If the concentration of reactant C is increased in the reaction A + B ⇌ C + D, what will be the effect on the equilibrium position?
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 will shift towards cand D
- B. It will shift towards A and B
- C. It will remain unchanged
- D. It will shift to the left
Answer
The correct option is It will shift towards cand D.
Explanation
The correct option is "It will shift towards cand D" because it supports the approved learning objective: (HT only) Interpret concentration changes in industrial equilibrium examples. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for The effect of changing concentration (HT only).
Common mistake
Misinterpreting Concentration Changes
Students often confuse the effect of increasing reactant concentration with decreasing product concentration, thinking both will shift equilibrium towards products.
Remember that increasing reactant concentration shifts equilibrium towards products, while increasing product concentration shifts equilibrium towards reactants.
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