DP Chemistry (last assessment 2024)

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Question 18M.2.hl.TZ1.c

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.2.hl.TZ1.c
Level hl Paper 2 Time zone TZ1
Command term Predict Question number c Adapted from N/A
c.
[Maximum mark: 1]
18M.2.hl.TZ1.c

Calcium carbonate reacts with hydrochloric acid.

CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)

Predict from your line of best fit the rate of reaction when the concentration of HCl is 1.00 mol dm−3.

[1]

Markscheme

20.5 ×  10–3 «mol dm–3 s–1»

 

Accept any answer in the range 19.5–21.5.

[1 mark]

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