AS & A Level Chemistry (9701) — October–November 2023, Paper 51
2 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 12 marks · Planning, Analysis and Evaluation - titration data processing
The concentration of dissolved oxygen in a sample of water can be measured using the following method. Manganese(II) hydroxide, Mn(OH)2, is oxidised by the oxygen dissolved in a…
Answer this question and get it marked →Question 2 · 18 marks · Planning, Analysis and Evaluation - apparatus diagrams
Benzenediazonium chloride, C6H5N2Cl, decomposes in water as shown in the following equation. C6H5N2Cl(aq) + H2O(l) - C6H5OH(aq) + N2(g) + HCl(aq) A solution of 0.0750 mol dm^-3 of…
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