Carboxylic acids — Paper 1 · IGCSE Chemistry (9-1) 0971

39 Which statements about aqueous ethanoic acid are correct? 1 Ethanoic acid contains the functional group –COOH. 2 Ethanoic acid reacts with carbonates to produce hydrogen. 3 Ethanoic acid turns Universal Indicator paper blue. 4 Ethanoic acid has a pH lower than pH 7. A 1 and 2 B 1 and 3 C 1 and 4 D 2 and 4

1 marks

Answer: C

This question in 0971/11 May/June 2019

39 Which statement about an aqueous solution of ethanoic acid is correct? A It reacts with magnesium to form water as one of the products. B It reacts with sodium carbonate to form carbon dioxide. C It reacts with sodium hydroxide to form hydrogen. D It turns red litmus paper blue.

1 marks

Answer: B

This question in 0971/12 Oct/Nov 2019

39 Some properties of an organic compound J are listed. ● It is a liquid at room temperature. ● It is soluble in water. ● A solution of J reacts with calcium carbonate to form carbon dioxide. ● A solution of J has a pH of 3. In which homologous series does J belong? A alkane B alkene C alcohol D carboxylic acid

1 marks

Answer: D

This question in 0971/11 May/June 2020

39 An organic compound, P, reacts with zinc to produce a gas, Q. What are P and Q? P Q A ethanoic acid carbon dioxide B ethanoic acid hydrogen C ethanol carbon dioxide D ethanol hydrogen

1 marks

Answer: B

This question in 0971/12 May/June 2020

40 The structure of a compound X is shown. O H C O H X is in the same homologous series as ethanoic acid. Which row describes some of the properties of an aqueous solution of X? reacts with CaCO3 neutralises turns methyl to produce a gas CuO orange red A no no no B no yes no C yes yes yes D yes no yes

1 marks

Answer: C

This question in 0971/12 Oct/Nov 2020

33 Some information about compound L is listed. 1 L is an organic compound which contains four hydrogen atoms. 2 L is soluble in water. 3 An aqueous solution of L reacts with copper(II) carbonate to produce a gas. What is L? A methane B ethene C ethanoic acid D ethanol

1 marks

Answer: C

This question in 0971/11 May/June 2021

37 What is a property of aqueous ethanoic acid? A It changes red litmus blue. B It has a deep purple colour. C It has a pH of less than 7. D It reacts with a metal oxide to form carbon dioxide.

1 marks

Answer: C

This question in 0971/12 Oct/Nov 2021

32 Compound J is an unsaturated carboxylic acid. Which bonds are present in a molecule of J? C=C C=O O-H A v v v B x v v Cc v x x D x v x key /=yes X =no

1 marks

Answer: A

This question in 0971/12 May/June 2022

39 Which statements about ethanoic acid are correct? 1 Aqueous ethanoic acid reacts with magnesium to form magnesium ethanoate. 2 Carbon dioxide is formed when aqueous ethanoic acid reacts with sodium carbonate. 3 Hydrogen is formed when aqueous ethanoic acid reacts with sodium hydroxide. 4 Ethanoic acid turns red litmus paper blue. A 1 and 2 B 1 and 3 C 2 and 3 D 2 and 4

1 marks

Answer: A

This question in 0971/12 May/June 2022

40 An organic compound X contains two carbon atoms in each molecule. X reacts with aqueous sodium carbonate to give carbon dioxide. What is compound X? A ethanol B ethane C CH2=CH2 D CH3COOH

1 marks

Answer: D

This question in 0971/12 Oct/Nov 2022

36 Which substances react with aqueous ethanoic acid to form a gas? 1 magnesium 2 magnesium carbonate 3 magnesium oxide A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: B

This question in 0971/11 May/June 2023

36 What is the formula of the salt formed when aqueous ethanoic acid reacts with calcium carbonate? A Ca(CH3COOH)2 B Ca(CH3COO)2 C Ca2CH3COOH D Ca2CH3COO

1 marks

Answer: B

This question in 0971/12 May/June 2023

36 Which statement about ethanoic acid is correct? A It contains a –COOH group. B It has a pH greater than pH 7. C It reacts with sodium carbonate to form hydrogen gas. D It reacts with copper to form copper(II) ethanoate.

1 marks

Answer: A

This question in 0971/11 May/June 2024

36 What are the properties of aqueous ethanoic acid? decolourises aqueous bromine reacts with calcium carbonate to make carbon dioxide turns damp red litmus paper blue v x v x \ &«& \ xX

1 marks

Answer: C

This question in 0971/12 Oct/Nov 2024

36 Which statements about ethanoic acid are correct? 1 Its aqueous solution has a pH value of 10. 2 It reacts with metal carbonates to produce carbon dioxide gas. 3 It reacts with magnesium metal to produce hydrogen gas. A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: D

This question in 0971/12 May/June 2025