plumiThe characteristic properties of acids and bases: CAIE IGCSE Chemistry questions
Every CAIE IGCSE Chemistry exam question on 7.1 The characteristic properties of acids and bases, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Q3(d)(i)
The whole paper ↗![June 2024 Paper 3, question 3(d)(i): State the meaning of the term alkali. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062031-jun24-03-di-qp.webp)
Q3(d)(ii)
The whole paper ↗![June 2024 Paper 3, question 3(d)(ii): Describe how to find the pH of a dilute solution of sodium hydroxide using universal indicator paper. [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062031-jun24-03-dii-qp.webp)
Q3(d)(iii)
The whole paper ↗
Q7(d)
The whole paper ↗![June 2024 Paper 3, question 7(d): Complete the word equation for the reaction of calcium carbonate with nitric acid. calcium nitric + → + water + carbonate acid [2] [Total: 11]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062031-jun24-07-d-qp.webp)
Q4(c)(ii)
The whole paper ↗![Specimen Paper 3, question 4(c)(ii): State the formula of the ion that is present in an aqueous solution of all acids. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-04-cii-qp.webp)
Q4(c)(iii)
The whole paper ↗![Specimen Paper 3, question 4(c)(iii): A few drops of the indicator methyl orange are added to aqueous dilute sulfuric acid. State the colour change observed. from orange to [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-04-ciii-qp.webp)
Q6(a)
The whole paper ↗![Specimen Paper 3, question 6(a): Complete this sentence about the different types of bases. Bases are metal hydroxides or metal [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-06-a-qp.webp)
Q6(b)
The whole paper ↗![Specimen Paper 3, question 6(b): Describe the reaction of aqueous sodium hydroxide with: • a named acid • an ammonium salt. [4]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-06-b-qp.webp)
Q6(c)
The whole paper ↗![Specimen Paper 3, question 6(c): Ammonia is a soluble base. Draw a circle around the pH value of aqueous ammonia. pH 1 pH 5 pH 7 pH 10 [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-06-c-qp.webp)
Q2(c)(ii)
The whole paper ↗![Specimen Paper 4, question 2(c)(ii): Identify the ion responsible for making solution Q alkaline. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062004-spec-02-cii-qp.webp)
Q2(c)(iii)
The whole paper ↗![Specimen Paper 4, question 2(c)(iii): Suggest the pH of solution Q. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062004-spec-02-ciii-qp.webp)
All 23 questions on The characteristic properties of acids and bases, as a list
- June 2024, Paper 1, Q18 (1 mark): A farmer treats a field with calcium hydroxide to make it less acidic. When the farmer adds ammonium nitrate fertiliser to the field immediately after the calci
- June 2024, Paper 2, Q24 (1 mark): Which gas is produced when ammonium chloride is warmed with aqueous sodium hydroxide? A ammonia B chlorine C hydrogen D nitrogen
- June 2024, Paper 2, Q25 (1 mark): Which equation represents a solution of ethanoic acid in water? HCOOH(aq) ⇌ HCOO–(aq) + H+(aq) A HCOOH(aq) → HCOO–(aq) + H+(aq) B CH3COOH(aq) ⇌ CH3COO–(aq) + H+
- June 2024, Paper 2, Q30 (1 mark): Propanoic acid is a carboxylic acid. It has similar chemical properties to ethanoic acid. Which statements are correct? 1 Aqueous propanoic acid is a weaker aci
- June 2024, Paper 3, Q3(d)(i) (1 mark): State the meaning of the term alkali. [1]
- June 2024, Paper 3, Q3(d)(ii) (2 marks): Describe how to find the pH of a dilute solution of sodium hydroxide using universal indicator paper. [2]
- June 2024, Paper 3, Q3(d)(iii) (2 marks): A dilute solution of sodium hydroxide is added to a solution of methyl orange in acid until the sodium hydroxide is in excess. State the colour change of the
- June 2024, Paper 3, Q7(d) (2 marks): Complete the word equation for the reaction of calcium carbonate with nitric acid. calcium nitric + → + water + carbonate acid [2] [Total: 11]
- Specimen, Paper 1, Q16 (1 mark): Farmers spread calcium hydroxide on their fields to neutralise soils that are too acidic for crops to grow well. Which ion neutralises the acid in the soil? A C
- Specimen, Paper 1, Q17 (1 mark): Four different solutions, J, K, L and M, are tested with universal indicator. solution J K L M colour with green red purple orange universal indicator Which sol
- Specimen, Paper 1, Q34 (1 mark): Limestone fizzes and dissolves in dilute hydrochloric acid. What is the word equation for this reaction? A calcium carbonate + hydrochloric acid → calcium chlor
- Specimen, Paper 2, Q18 (1 mark): Four different solutions, J, K, L and M, are tested with universal indicator. solution J K L M colour with green red purple orange universal indicator Which sol
- Specimen, Paper 2, Q19 (1 mark): Which solution has the lowest pH? A 0.1 mol / dm3 ammonia solution B 0.1 mol / dm3 ethanoic acid C 0.1mol / dm3 hydrochloric acid D 0.1 mol / dm3 lithium hydrox
- Specimen, Paper 3, Q4(c)(ii) (1 mark): State the formula of the ion that is present in an aqueous solution of all acids. [1]
- Specimen, Paper 3, Q4(c)(iii) (1 mark): A few drops of the indicator methyl orange are added to aqueous dilute sulfuric acid. State the colour change observed. from orange to [1]
- Specimen, Paper 3, Q6(a) (1 mark): Complete this sentence about the different types of bases. Bases are metal hydroxides or metal [1]
- Specimen, Paper 3, Q6(b) (4 marks): Describe the reaction of aqueous sodium hydroxide with: • a named acid • an ammonium salt. [4]
- Specimen, Paper 3, Q6(c) (1 mark): Ammonia is a soluble base. Draw a circle around the pH value of aqueous ammonia. pH 1 pH 5 pH 7 pH 10 [1]
- Specimen, Paper 4, Q2(c)(ii) (1 mark): Identify the ion responsible for making solution Q alkaline. [1]
- Specimen, Paper 4, Q2(c)(iii) (1 mark): Suggest the pH of solution Q. [1]
- Specimen, Paper 4, Q4(a)(i) (1 mark): Define the term acid. [1]
- Specimen, Paper 4, Q4(a)(ii) (1 mark): Define the term strong acid. [1]
- Specimen, Paper 4, Q4(c)(i) (1 mark): State the colour of methyl orange in aqueous sodium hydroxide. [1]
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