O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2018 · Q171 Mark

When bismuth(III) chloride, BiCl₃, is added to water, a reaction occurs and a white precipitate of BiOCl is formed. BiCl₃(aq) + H₂O(l) ⇌ BiOCl(s) + 2HCl(aq) Which changes increase the mass of white precipitate formed? 1 adding more water 2 adding aqueous sodium hydroxide 3 adding dilute hydrochloric acid

A1 and 2

B1 and 3

C1 only

D2 and 3

✓ Correct answer

A: 1 and 2

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2018 Paper 1 Variant 1, question 17.

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