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Question 18M.2.sl.TZ2.b.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.2.sl.TZ2.b.i
Level sl Paper 2 Time zone TZ2
Command term Show, Sketch Question number b.i Adapted from N/A
b.i.
[Maximum mark: 1]
18M.2.sl.TZ2.b.i

Graphing is an important tool in the study of rates of chemical reactions.

Excess hydrochloric acid is added to lumps of calcium carbonate. The graph shows the volume of carbon dioxide gas produced over time.

Sketch a curve on the graph to show the volume of gas produced over time if the same mass of crushed calcium carbonate is used instead of lumps. All other conditions remain constant.

[1]

Markscheme

M18/4/CHEMI/SP2/ENG/TZ2/02.b.i/M

curve starting from origin with steeper gradient AND reaching same maximum volume

[1 mark]

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