O-LevelChemistryAcids, Bases & Salts5070/11 · May/June 2016 · Q31 Mark

How can a pure sample of barium sulfate be obtained from barium carbonate?

ADissolve it in dilute hydrochloric acid, add dilute sulfuric acid, filter and crystallise.

BDissolve it in dilute hydrochloric acid, add dilute sulfuric acid, filter and wash.

CDissolve it in water, add dilute sulfuric acid, filter and crystallise.

DDissolve it in water, add dilute sulfuric acid, filter and wash.

✓ Correct answer

B: Dissolve it in dilute hydrochloric acid, add dilute sulfuric acid, filter and wash.

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2016 Paper 1 Variant 1, question 3.

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