A-LevelChemistryChemical energetics9701/12 · Feb/Mar 2023 · Q101 Mark

The equation for a chemical reaction is shown. All substances are in their standard states. XeF6 + 3H2O → XeO3 + 6HF Which statement describes the standard enthalpy change of reaction for this reaction?

Athe enthalpy change when a total of one mole of products is produced

Bthe enthalpy change when a total of one mole of reactants is reacted

Cthe enthalpy change when one mole of water reacts

Dthe enthalpy change when six moles of hydrogen fluoride are produced

✓ Correct answer

D: the enthalpy change when six moles of hydrogen fluoride are produced

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Topic: Chemical energetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2023 Paper 1 Variant 2, question 10.

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