The characteristic properties of acids and bases: past paper questions

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• Question 20May/June 2026, paper 11Multiple choice1 markHas a diagram

  Thymolphthalein and methyl orange are separately added to test-tubes containing aqueous potassium hydroxide. What is the final colour of the solution in each test-tube?

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• Question 19Oct/Nov 2025, paper 12Multiple choice1 mark

  Which substances react with dilute hydrochloric acid to form aqueous copper(II) chloride?

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• Question 7Oct/Nov 2024, paper 11Multiple choice1 mark

  Metal X is in Group II of the Periodic Table. X is reacted separately with dilute sulfuric acid and with oxygen. Which row identifies the products of each reaction?

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• Question 16Oct/Nov 2023, paper 11Multiple choice1 mark

  Which solids react with dilute sulfuric acid to form aqueous magnesium sulfate?

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• Question 21May/June 2026, paper 11Multiple choice1 mark

  Copper(II) chloride is made when copper(II) carbonate reacts with dilute hydrochloric acid. What are the other products in this reaction?

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• Question 17Oct/Nov 2024, paper 11Multiple choice1 mark

  Which statements about dilute ethanoic acid are correct?

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• Question 17Oct/Nov 2023, paper 11Multiple choice1 mark

  Which statements about an aqueous acid are correct?

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• Question 22May/June 2026, paper 11Multiple choice1 mark

  Dilute acid HA has a pH of 2 and dilute acid HX has a pH of 4. Both acids have the same concentration. Which statement is correct?

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• Question 18Oct/Nov 2025, paper 13Multiple choice1 markHas a diagram

  Base Q dissolves in water to make aqueous Q. Aqueous Q is tested with thymolphthalein. Which row gives the colour of thymolphthalein in aqueous Q and the ion responsible for this colour?

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• Question 18Oct/Nov 2024, paper 11Multiple choice1 markHas a diagram

  An aqueous solution of Z turns universal indicator paper purple.

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• Question 15Oct/Nov 2023, paper 12Multiple choice1 markHas a diagram

  Zinc reacts slowly with dilute sulfuric acid at room temperature. Bubbles of a gas, L, form on the surface of the zinc. When a small amount of copper is added, the reaction is faster.

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• Question 16May/June 2026, paper 12Multiple choice1 mark

  Farmers add calcium oxide (lime) and ammonium salts to their fields. The compounds are not added at the same time because they react with each other. Which gas is produced in this reaction?

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• Question 19Oct/Nov 2025, paper 13Multiple choice1 mark

  Solid calcium hydroxide is added to aqueous ammonium chloride and the mixture is warmed.

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• Question 9Oct/Nov 2024, paper 12Multiple choice1 mark

  Which symbol equation represents the reaction between aqueous sodium hydroxide and dilute sulfuric acid?

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• Question 18Oct/Nov 2023, paper 12Multiple choice1 mark

  Which products are formed when magnesium carbonate reacts with dilute hydrochloric acid?

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• Question 17May/June 2026, paper 12Multiple choice1 markHas a diagram

  Which row identifies the universal indicator colour, pH and hydrogen ion concentration for the stated solution?

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• Question 34Oct/Nov 2025, paper 13Multiple choice1 markHas a diagram

  The equation shows the reaction between ethanoic acid and solid P to produce Q and hydrogen.

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• Question 20Oct/Nov 2024, paper 12Multiple choice1 mark

  Compound M contains calcium. Two reactions of M are listed. ● M reacts with dilute hydrochloric acid to form a salt and water only.

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• Question 18Oct/Nov 2023, paper 13Multiple choice1 mark

  Information about four solutions, P, Q, R and S, is listed. Solution P reacts with ammonium chloride to form ammonia. Solution Q reacts with sodium carbonate to form carbon dioxide.

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• Question 36May/June 2026, paper 12Multiple choice1 markHas a diagram

  Potassium ethanoate is made by reacting ethanoic acid with potassium hydroxide. What else is formed in the reaction?

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• Question 20Oct/Nov 2025, paper 21Multiple choice1 mark

  Which statement describes a property of ethanoic acid?

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• Question 17Oct/Nov 2023, paper 21Multiple choice1 mark

  Which statement about acids is correct?

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• Question 16May/June 2026, paper 13Multiple choice1 mark

  Which word equation is correct?

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• Question 22Oct/Nov 2025, paper 22Multiple choice1 mark

  The equation shows the reaction between aqueous hydrogen bromide and aqueous ammonia. $$\text{HBr(aq)}+{\text{NH}}_3\text{(aq)}\to {\text{NH}}_4^{+}\text{(aq)}+{\text{Br}}^{-}\text{(aq)}$$ Which statement describes the role of aqueous hydrogen bromide?

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• Question 36Oct/Nov 2024, paper 12Multiple choice1 markHas a diagram

  What are the properties of aqueous ethanoic acid?

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• Question 19Oct/Nov 2023, paper 22Multiple choice1 mark

  In which reaction does an acid react with a base?

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• Question 20May/June 2026, paper 13Multiple choice1 mark

  Which solids neutralise dilute sulfuric acid to form aqueous magnesium sulfate?

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• Question 21Oct/Nov 2025, paper 23Multiple choice1 mark

  Which statement describes a base?

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• Question 19Oct/Nov 2024, paper 13Multiple choice1 markHas a diagram

  Which row identifies a basic oxide and describes an alkali?

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• Question 15Oct/Nov 2023, paper 23Multiple choice1 markHas a diagram

  Statements about four different acids are listed. ● A $0.0100{\text{ mol / dm}}^3$ solution of hydrochloric acid has a pH of 2. ● A $0.0100{\text{ mol / dm}}^3$ solution of ethanoic acid has a pH of 3.4.

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