This question is about organic compounds. Ethanol is an alcohol. One use of ethanol is in alcoholic drinks. Give two other uses of ethanol. 5 (b) Which gas is produced when sodium reacts with ethanol? Tick (✓) one box. Carbon dioxide Carbon monoxide Hydrogen Oxygen 5 (c) Ethanoic acid (CH₃COOH) can be produced from ethanol (CH₃CH₂OH). 5 (c) (i) What type of reaction produces ethanoic acid from ethanol? 5 (c) (ii) Complete the displayed structure of ethanoic acid. 5 (c) (iii) Solutions of ethanoic acid and hydrochloric acid with the same concentration have different pH values. Explain why the solution of ethanoic acid has a higher pH than the solution of hydrochloric acid. 5 (d) Ethanol and ethanoic acid react in the presence of a catalyst to form an ester. 5 (d) (i) Name the ester made from ethanol and ethanoic acid. 5 (d) (ii) What type of chemical is used as a catalyst in this reaction? 5 (d) (iii) Esters are used in perfumes because they smell pleasant and are volatile. What does volatile mean?

GCSE AQA Chemistry Reactions of Alkenes & Alcohols: This question is about organic c

This question is about organic compounds - AQA - GCSE Chemistry - Question 5 - 2015 - Paper 3

Question 5

This question is about organic compounds. Ethanol is an alcohol. One use of ethanol is in alcoholic drinks. Give two other uses of ethanol. 5 (b) Which gas is prod... show full transcript

Worked Solution & Example Answer:This question is about organic compounds - AQA - GCSE Chemistry - Question 5 - 2015 - Paper 3

Step 1

Give two other uses of ethanol.

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Answer

Ethanol can be used:

As a fuel, providing energy for engines.
As a solvent in various chemical processes.

Step 2

Which gas is produced when sodium reacts with ethanol?

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Answer

The gas produced is Hydrogen.

Step 3

What type of reaction produces ethanoic acid from ethanol?

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Answer

The reaction type is oxidation.

Step 4

Complete the displayed structure of ethanoic acid.

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Answer

The displayed structure of ethanoic acid is:

    O
    ||
H - C - C - OH
    |   |
    H   H

Step 5

Explain why the solution of ethanoic acid has a higher pH than the solution of hydrochloric acid.

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Answer

Ethanoic acid is a weak acid which does not completely ionize in solution, resulting in a lower concentration of hydrogen ions compared to hydrochloric acid, which is a strong acid that fully ionizes.

Step 6

Name the ester made from ethanol and ethanoic acid.

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Answer

The ester made from ethanol and ethanoic acid is ethyl ethanoate.

Step 7

What type of chemical is used as a catalyst in this reaction?

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Answer

The catalyst used in this reaction is an acid.

Step 8

What does volatile mean?

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Answer

Volatile means that a substance easily evaporates at normal temperatures, has a low boiling point, and is not flammable.

This question is about organic compounds - AQA - GCSE Chemistry - Question 5 - 2015 - Paper 3

Worked Solution & Example Answer:This question is about organic compounds - AQA - GCSE Chemistry - Question 5 - 2015 - Paper 3

Give two other uses of ethanol.

Which gas is produced when sodium reacts with ethanol?

What type of reaction produces ethanoic acid from ethanol?

Complete the displayed structure of ethanoic acid.

Explain why the solution of ethanoic acid has a higher pH than the solution of hydrochloric acid.

Name the ester made from ethanol and ethanoic acid.

What type of chemical is used as a catalyst in this reaction?

What does volatile mean?

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