Which type of reaction is not involved in this reaction sequence?
A esterification
B hydrolysis
C nitration
D reduction - AQA - A-Level Chemistry - Question 30 - 2022 - Paper 3
Question 30
Which type of reaction is not involved in this reaction sequence?
A esterification
B hydrolysis
C nitration
D reduction
Worked Solution & Example Answer:Which type of reaction is not involved in this reaction sequence?
A esterification
B hydrolysis
C nitration
D reduction - AQA - A-Level Chemistry - Question 30 - 2022 - Paper 3
Step 1
A esterification
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Answer
Esterification is the formation of esters from carboxylic acids and alcohols. In this sequence, ester formation is likely occurring, especially when starting from the first compound, where a methyl group is attached to a carboxylic acid.
Step 2
B hydrolysis
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Answer
Hydrolysis involves breaking down compounds with water. Given the reaction context, hydrolysis is involved in breaking down the esters formed in the sequence. Therefore, this reaction type does not occur.
Step 3
C nitration
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Answer
Nitration is the introduction of nitro groups into the aromatic ring, which is clearly happening in the second and third steps of the reaction sequence. This reaction type is thus involved.
Step 4
D reduction
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Answer
Reduction typically involves the gain of electrons or hydrogen, which is not depicted within these steps. Therefore, reduction is not a part of the reaction sequence.
