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This question is about alcohols - Edexcel - GCSE Chemistry - Question 7 - 2021 - Paper 1
Question 7
This question is about alcohols. (a) (i) Figure 14 shows an incomplete diagram of the structure of a molecule of propanol, CH$_3$CH$_2$CHOH. Complete the structure... show full transcript
Worked Solution & Example Answer:This question is about alcohols - Edexcel - GCSE Chemistry - Question 7 - 2021 - Paper 1
Step 1
Complete the structure of the molecule of propanol in Figure 14.
Answer
The completed structure of propanol (CHO) consists of a three-carbon chain with a hydroxyl (-OH) group attached to the first carbon. Thus, the structure is:
H H H
| | |
H--C--C--C--OH
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H H H
(Ensure that each carbon is tetravalent with correct hydrogen count.)
Step 2
Propanoic acid conversion: What happens to propanol in this reaction?
Answer
In the reaction where propanol is converted to propanoic acid, propanol undergoes oxidation. This involves the addition of an oxygen atom and the loss of hydrogen atoms. Therefore, the correct answer is:
C. it is oxidised.