AS & A Level Chemistry (9701) — May–June 2025, Paper 32
3 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 15 marks · Practical skills: titration technique, recording data
In this experiment you will carry out a titration to determine the proticity of citric acid, C6H8O7. FB 1 is aqueous citric acid containing 7.50 g dm-3 C6H8O7. FB 2 is aqueous…
Answer this question and get it marked →Question 2 · 12 marks · Practical skills: calorimetry, recording data
You will determine the enthalpy change for the reaction of aqueous citric acid with aqueous sodium hydroxide to form aqueous sodium citrate. FB 4 and FB 5 are both citric acid,…
Answer this question and get it marked →Question 3 · 13 marks · Practical skills: qualitative analysis, identification of ions
Solutions FB 7 and FB 8 each contain one cation and one anion. All of the ions are listed in the Qualitative analysis notes. (i) Carry out the following tests and record your…
Answer this question and get it marked →