AS & A Level Chemistry (9701) — May–June 2024, Paper 43
9 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →(i) Describe the trend in the solubility of the hydroxides of magnesium, calcium and strontium. Place them in order from most soluble to least soluble. Explain your answer. (ii)…
Answer this question and get it marked →(i) Define transition element. (ii) Explain why transition elements can form complex ions.
Answer this question and get it marked →When a sample of hydrated lithium ethanedioate, Li2C2O4.H2O, is gently heated, two gaseous products are formed and a white solid residue remains. The residue is added to HNO3(aq).…
Answer this question and get it marked →Define standard electrode potential, E-standard, including a description of standard conditions.
Answer this question and get it marked →In aqueous solution, persulfate ions, S2O8^2-, react with iodide ions, as shown in reaction 1: S2O8^2- + 2I- - 2SO4^2- + I2. The rate of reaction 1 is investigated. A sample of…
Answer this question and get it marked →(i) State what is meant by partition coefficient, K(pc). (ii) The partition coefficient, K(pc), for a compound X between carbon disulfide, CS2, and water is 10.5. 1.85 g of X is…
Answer this question and get it marked →Give the systematic name of ester A.
Answer this question and get it marked →Neotame is an artificial sweetener added to some foods. (i) State the number of chiral carbon atoms in a molecule of neotame. (ii) Neotame contains the arene functional group.…
Answer this question and get it marked →Samples of phenol, C6H5OH, are reacted separately with sodium and with dilute nitric acid. (i) Write the equation for the reaction of C6H5OH with Na. (ii) Draw the structures of…
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