A-LevelChemistryReaction kinetics9701/12 · Oct/Nov 2011 · Q11 Mark

In the Haber process for the manufacture of ammonia, why is the heterogeneous catalyst iron in a finely divided state?

Ato increase its surface area

Bto produce the maximum reduction in the activation energy

Cto reduce its loss during the reaction

Dto reduce its surface area

✓ Correct answer

A: to increase its surface area

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Topic: Reaction kinetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2011 Paper 1 Variant 2, question 1.

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