DP Chemistry (last assessment 2024)

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Question 23M.1.HL.TZ2.18

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1.HL.TZ2.18
Level HL Paper 1 Time zone TZ2
Command term Question number 18 Adapted from N/A
18.
[Maximum mark: 1]
23M.1.HL.TZ2.18

Curve X on the following graph shows the volume of oxygen formed during the catalytic decomposition of a 1.0 mol dm−3 solution of hydrogen peroxide.

Which change would produce the curve Y?


A.  Adding water.

B.  Adding some 0.1 mol dm−3 hydrogen peroxide solution.

C.  Adding some 2.0 mol dm−3 hydrogen peroxide solution.

D.  Repeating the experiment without a catalyst.

[1]

Markscheme

B

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