Photo AI
A new industrial preparation of ethyl ethanoate has been developed using cheap sources of ethanol - CIE - A-Level Chemistry - Question 20 - 2013 - Paper 1
Question 20
A new industrial preparation of ethyl ethanoate has been developed using cheap sources of ethanol. CH3CH2OH + Cu catalyst → CH3CHO + CH3CH2OH ... show full transcript
Worked Solution & Example Answer:A new industrial preparation of ethyl ethanoate has been developed using cheap sources of ethanol - CIE - A-Level Chemistry - Question 20 - 2013 - Paper 1
Step 1
nucleophilic addition
Answer
In the given reaction sequence, we start with ethanol (CH3CH2OH) reacting with a copper catalyst to form acetaldehyde (CH3CHO). This step involves nucleophilic addition, where the nucleophile (the oxygen in ethanol) attacks the carbonyl carbon in acetaldehyde, leading to a new compound.
Next, the intermediate formed undergoes further reaction with another molecule of ethanol in the presence of the catalyst, resulting in ethyl ethanoate (CH3CO2CH3). This indicates that nucleophilic addition has occurred at this stage as well, where the ethanol acts as a nucleophile.
Therefore, the correct answer is B: nucleophilic addition.