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Question 18M.2.hl.TZ1.4b.v

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Date May 2018 Marks available [Maximum mark: 2] Reference code 18M.2.hl.TZ1.4b.v
Level hl Paper 2 Time zone TZ1
Command term Calculate, State Question number b.v Adapted from N/A
b.v.
[Maximum mark: 2]
18M.2.hl.TZ1.4b.v

Calcium carbonate reacts with hydrochloric acid.

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

The results of a series of experiments in which the concentration of HCl was varied are shown below.

M18/4/CHEMI/HP2/ENG/TZ1/X04.b

(b.v)

Calculate the rate constant of the reaction, stating its units.

[2]

Markscheme

0.02

s–1

 

[2 marks]

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