O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2013 · Q31 Mark

A student wanted to follow how the rate of the reaction of sodium sulfite with acid varies with time. The reaction produces gaseous sulfur dioxide. Which apparatus is not suitable?

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AApparatus with tap funnel, gas syringe, and flask containing sodium sulfite and acid.

BApparatus with tap funnel, burette, water, and flask containing sodium sulfite and acid.

CApparatus with cotton wool, thistle funnel, flask containing sodium sulfite and acid, on a balance.

DApparatus with thistle funnel, gas syringe, and flask containing sodium sulfite and acid.

✓ Correct answer

B: Apparatus with tap funnel, burette, water, and flask containing sodium sulfite and acid.

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2013 Paper 1 Variant 1, question 3.

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