Changing the pressure on the reaction
2 marks · EasyA student compresses a liquid to try to double the rate of reaction. The initial time taken for the reaction is 30 minutes. Calculate the likely time taken to complete the reaction after the pressure is doubled. Explain your answer.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
30 minutes (±0.1)
Also accept: about 30 minutes
Common mistakes: 15 minutes
Show mark scheme and worked solution
Marking points
M1 · 1 mark · Recognises that doubling pressure has little effect on rate for liquids, so time remains almost the same.
A1 · 1 mark · Correctly gives the time as 30 minutes.
Worked solution
Doubling pressure for a liquid does not change the rate significantly, so the time stays about the same: 30 minutes.