O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2019 · Q151 Mark

Gas P decomposes to form gas Q. xP → yQ Two experiments are carried out to investigate the rate of reaction. The conditions are the same except that two different temperatures, T₁ and T₂, are used. The results are plotted on graphs, drawn to the same scale. [Two graphs showing volume of P and Q vs time at temperatures T1 and T2] Which row is correct?

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AX:2, Y:3, temperature:T₁ is higher than T₂

BX:2, Y:3, temperature:T₂ is higher than T₁

CX:3, Y:2, temperature:T₁ is higher than T₂

DX:3, Y:2, temperature:T₂ is higher than T₁

✓ Correct answer

A: X:2, Y:3, temperature:T₁ is higher than T₂

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2019 Paper 1 Variant 1, question 15.

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