A-LevelChemistryChemical periodicity9701/12 · Oct/Nov 2021 · Q121 Mark

A mixture of two Period 3 oxides are added to water. A solution forms with a pH of just below 7. What could be the constituents of the mixture?

AAl2O3 and MgO

BNa2O and MgO

CNa2O and P4O10

DSO3 and P4O10

✓ Correct answer

C: Na2O and P4O10

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2021 Paper 1 Variant 2, question 12.

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