AS & A Level Chemistry (9701) — May–June 2023, Paper 53
3 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 9 marks · Practical skills (separating immiscible liquids)
State whether beaker A in step 7 contains the aqueous layer or the ethoxyethane layer. Explain your answer.
Answer this question and get it marked →Question 2 · 7 marks · Practical skills (paper chromatography technique)
Suggest why each sample is applied to the chromatography paper using a thin capillary tube rather than a dropping pipette.
Answer this question and get it marked →Question 3 · 14 marks · Practical skills (preparing a standard solution)
The scientist is given 1.02 g of an aromatic diazonium compound in a 50 cm3 beaker. Describe the steps the scientist should take to make a 100.0 cm3 standard solution containing…
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