plumiCAIE A‑Level Chemistry questions by topic
Every question from the CAIE AS & A Level Chemistry (9701) papers Cambridge International publishes, June 2024 and the specimen papers, part by part. Cambridge keeps its other papers on its School Support Hub, for schools. Filter by topic or paper, open the mark scheme under any question, and download a set as a PDF.
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Q1(a)(i)
The whole paper ↗![June 2024 Paper 4, question 1(a)(i): Describe the trend in the solubility of the hydroxides of magnesium, calcium and strontium. Explain your answer. > > most soluble least soluble [4]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-01-ai-qp.webp)
Q1(a)(ii)
The whole paper ↗![June 2024 Paper 4, question 1(a)(ii): Suggest the variation in pH of saturated solutions of the hydroxides of magnesium, calcium and strontium. Explain your answer. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-01-aii-qp.webp)
Q1(b)
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Q1(c)(i)
The whole paper ↗![June 2024 Paper 4, question 1(c)(i): Write the expression for the solubility product, Ksp, of Fe(OH)2. Ksp = [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-01-ci-qp.webp)
Q1(c)(ii)
The whole paper ↗![June 2024 Paper 4, question 1(c)(ii): Calculate the value of Ksp of Fe(OH)2. Include its units. Ksp = units = [2] [Total: 12]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-01-cii-qp.webp)
Q2(a)(i)
The whole paper ↗![June 2024 Paper 4, question 2(a)(i): Define transition element. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-02-ai-qp.webp)
Q2(a)(ii)
The whole paper ↗![June 2024 Paper 4, question 2(a)(ii): Explain why transition elements can form complex ions. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-02-aii-qp.webp)
Q2(b)(i)
The whole paper ↗![June 2024 Paper 4, question 2(b)(i): Define degenerate d orbitals. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-02-bi-qp.webp)
Q2(b)(ii)
The whole paper ↗![June 2024 Paper 4, question 2(b)(ii): Sketch the shape of a 3dxy orbital in Fig. 2.1. y z x Fig. 2.1 [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-02-bii-qp.webp)
Q2(c)
The whole paper ↗![June 2024 Paper 4, question 2(c): Tollens’ reagent can be used to distinguish between aldehydes and ketones. Tollens’ reagent contains [Ag(NH3)2]OH, which can be prepared in a two-step process.](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-02-c-qp.webp)
Q2(d)
The whole paper ↗![June 2024 Paper 4, question 2(d): Name the shape of the complex ion [Ag(NH3)2]+. State the bond angle for H-N-Ag and for N-Ag-N. shape bond angle for H-N-Ag = ° bond angle for N-Ag-N = ° [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-02-d-qp.webp)
Q2(e)
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Q2(f)
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Q3(a)
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Q3(b)
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Q3(c)
The whole paper ↗![June 2024 Paper 4, question 3(c): Potassium iron(III) ethanedioate, K3[Fe(C2O4)3], dissolves in water to form a green solution. Explain why transition elements can form coloured complexes. [3]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-03-c-qp.webp)
Q3(d)
The whole paper ↗![June 2024 Paper 4, question 3(d): The anhydrous iron(III) compound K3[Fe(C2O4)3] decomposes on heating to form a mixture of K2[Fe(C2O4)2], K2C2O4 and CO2. Complete the equation for the decomposi](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-03-d-qp.webp)
Q3(e)
The whole paper ↗![June 2024 Paper 4, question 3(e): The [Fe(C2O4)3]3– complex ion shows stereoisomerism. Complete the three-dimensional diagrams in Fig. 3.1 to show the two stereoisomers of [Fe(C2O4)3]3–. The C2O](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970141-jun24-03-e-qp.webp)
Q3(f)
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Q3(g)
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