AS & A Level Chemistry (9701) — May–June 2025, Paper 22
5 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Diamond and graphite are both crystalline solids made from carbon atoms. Graphite conducts electricity. Diamond does not conduct electricity. (i) Name the type of lattice…
Answer this question and get it marked →(i) Define relative atomic mass. (ii) Use Table 2.1 to calculate the relative isotopic mass of the third isotope of iron in the sample. Show your working.
Answer this question and get it marked →C3H6 reacts with HBr(g) in an addition reaction. (i) Define addition reaction. (ii) Complete Fig. 3.1 to show the mechanism for the addition reaction between C3H6 and HBr to…
Answer this question and get it marked →Propanoic acid, CH3CH2COOH, reacts with reducing agent Q to produce propan-1-ol, CH3CH2CH2OH. (i) Suggest the formula of reducing agent Q. (ii) Complete the equation to show the…
Answer this question and get it marked →Deduce the empirical formula of vitamin C (molecular formula C6H8O6).
Answer this question and get it marked →