O-LevelChemistryStoichiometry5070/11 · May/June 2017 · Q121 Mark

The formula for hydrated copper(II) nitrate is Cu(NO3)2.XH2O. It contains 36.5% water of crystallisation by mass. What is the value of x? [Ar: Η, 1; N, 14; O, 16; Cu, 64]

✓ Correct answer

C: 6

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Topic: Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2017 Paper 1 Variant 1, question 12.

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