AS & A Level Chemistry (9701) — May–June 2023, Paper 43
8 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Group 2 nitrates decompose when heated. Describe how the thermal stability of Group 2 nitrates changes with increasing proton number. Explain your answer.
Answer this question and get it marked →Some transition element complexes can show stereoisomerism. State two types of stereoisomerism shown by transition element complexes.
Answer this question and get it marked →Aqueous acidified iodate(V) ions, IO3-, react with iodide ions, as shown: IO3- + 6H+ + 5I- - 3I2 + 3H2O. The initial rate of this reaction is investigated. Table 3.1 gives…
Answer this question and get it marked →State the hybridisation of the carbon atoms and the C-C-H bond angle in benzene, C6H6. Explain how orbital overlap leads to the formation of sigma and pi bonds in benzene.
Answer this question and get it marked →The exhaust systems of most modern gasoline-fuelled cars contain a catalytic converter with three metal catalysts. These metals act as heterogeneous catalysts. Name three metal…
Answer this question and get it marked →Compound H has the structural formula CH2=CHCH(NH2)COOH. Name all the functional groups in H.
Answer this question and get it marked →State the relative basicities of ethanamide, diethylamine and ethylamine in aqueous solution (from most basic to least basic). Explain your answer.
Answer this question and get it marked →Complete Table 8.1 by placing one tick in each row to indicate the sign of each type of energy change under standard conditions: lattice energy, enthalpy change of hydration, and…
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