AS & A Level Chemistry (9701) — October–November 2024, Paper 41
8 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Disodium phosphate, (Na+)2(HPO4 2-), reacts with an acid to form monosodium phosphate, Na+(H2PO4 -). (a)(i) Identify the ions that are a conjugate acid-base pair in this reaction,…
Answer this question and get it marked →(a) Predict and explain the variation in enthalpy change of hydration for the ions F-, Cl-, Br- and I-.
Answer this question and get it marked →(a) A and B react together to give product AB. A + B - AB When the concentrations of A and B are both 0.0100 mol dm-3, the rate of formation of AB is 7.62 x 10^-4 mol dm-3 s-1.…
Answer this question and get it marked →Transition metal atoms and transition metal ions form complexes by combining with ligands. (a) Explain why transition elements form complex ions.
Answer this question and get it marked →The shapes of four different complexes, P, Q, R and S, are shown in Table 5.1. The symbol J represents an atom or ion of a transition element. The symbol L is used to represent a…
Answer this question and get it marked →Benzene, C6H6, reacts with chloroethane, C2H5Cl, in the presence of a suitable catalyst to form ethylbenzene, C6H5C2H5. In the presence of the catalyst, the ion C2H5 + is formed.…
Answer this question and get it marked →A reaction scheme is shown in Fig. 7.1. The reagents needed for reaction 2 and reaction 3 are stated. Reaction 5 takes place when C2H5NH2 is mixed with compound V. No special…
Answer this question and get it marked →(a) An aqueous solution of phenol, C6H5OH, is acidic at 298 K. Explain why phenol is more acidic than water.
Answer this question and get it marked →← October–November 2024 Paper 42 · October–November 2024 Paper 36 →