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O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2012 · Q151 Mark

The diagram shows the steps by which carbon dioxide can be converted into organic products and finally returned to the atmosphere. Which step is endothermic?

Diagram for this question, from the exam paper

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AStep A in [Figure 15.1]
BStep B in [Figure 15.1]
CStep C in [Figure 15.1]
DStep D in [Figure 15.1]

✓ Correct answer

A: Step A in [Figure 15.1]

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About this question

Topic
Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2012 Paper 1 Variant 1, question 15.

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