O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2011 · Q161 Mark

The following reversible reaction takes place in a closed vessel at constant temperature. P(g) + Q(g) + R(g) ⇌ S(g) + T(g) When the system has reached equilibrium, more T is added. Which increases in concentration occur?

AP, Q, R and S

BP and Q only

CP, Q and R only

DS only

✓ Correct answer

C: P, Q and R only

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2011 Paper 1 Variant 1, question 16.

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