DP Chemistry (last assessment 2024)

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Question 21M.2.hl.TZ2.1b(v)

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.2.hl.TZ2.1b(v)
Level hl Paper 2 Time zone TZ2
Command term State Question number b(v) Adapted from N/A
b(v).
[Maximum mark: 1]
21M.2.hl.TZ2.1b(v)

Limestone can be converted into a variety of useful commercial products through the lime cycle. Limestone contains high percentages of calcium carbonate, CaCO3.

Thermodynamic data for the decomposition of calcium carbonate is given.

(b(v))

State how adding a catalyst to the reaction would impact the enthalpy change of reaction, ΔH, and the activation energy, Ea.

[1]

Markscheme

ΔH same AND lower Ea ✓

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