Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Drawing and naming the carboxylic acids
19 practice questions
Practice questions
1–8 of 8 · Easy
Question 1
1 mark · Easy
Answer and see the solution →Name the carboxylic acid that is the main acidic component in vinegar.
Question 2
3 marks · Easy
Answer and see the solution →This question is about drawing carboxylic acids.
(a)[1 mark]State the number of carbon atoms in methanoic acid.
(b)[2 marks]Draw the displayed formula for ethanoic acid.
Question 3
2 marks · Easy
Answer and see the solution →Give the name of the unbranched carboxylic acid with the molecular formula .
Question 4
3 marks · Easy
Answer and see the solution →The table shows the molecular formulae of four carboxylic acids.
Name Molecular formula methanoic acid CH2O2 ethanoic acid C2H4O2 propanoic acid C3H6O2 butanoic acid C4H8O2 (a)[1 mark]Which acid in the table has the greatest number of hydrogen atoms?
(b)[1 mark]How many carbon atoms does ethanoic acid have?
(c)[1 mark]Give the name of the acid with formula .
Question 5
1 mark · Easy
Answer and see the solution →What is the name of the carboxylic acid with the unbranched chain and molecular formula ?
Question 6
2 marks · Easy
Answer and see the solution →How many hydrogen atoms are present in one molecule of propanoic acid?
Question 7
2 marks · Easy
Answer and see the solution →Vinegar is commonly used as a cleaning agent in households. Explain why ethanoic acid is important when talking about vinegar.
Question 8
3 marks · Easy
Answer and see the solution →Ethanoic acid is found in vinegar.
(a)[1 mark]State the name of the main acid present in vinegar.
(b)[1 mark]Write the molecular formula for ethanoic acid.
(c)[1 mark]Give one everyday use of vinegar that depends on its acidic property.