A-LevelChemistryEquilibria9701/12 · May/June 2018 · Q51 Mark

The gases X and Y react to form Z. X(g) + Y(g) ⇌ Z(g) An equilibrium mixture of these three gases is compressed at constant temperature. What will be the changes in the mole fraction of Z and in Kp? [Table showing mole fraction of Z and Kp changes]

Aincrease increase

Bincrease no change

Cno change increase

Dno change no change

✓ Correct answer

B: increase no change

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Topic: Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2018 Paper 1 Variant 2, question 5.

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