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Which compounds will produce ethanoic acid when boiled under reflux with dilute alkali followed by acidification? 1 CH₃CH₂Cl 2 CH₃CO₂CH₃ 3 CH₃CN - CIE - A-Level Chemistry - Question 39 - 2011 - Paper 1

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Question 39

Which-compounds-will-produce-ethanoic-acid-when-boiled-under-reflux-with-dilute-alkali-followed-by-acidification?--1-CH₃CH₂Cl-2-CH₃CO₂CH₃-3-CH₃CN-CIE-A-Level Chemistry-Question 39-2011-Paper 1.png

Which compounds will produce ethanoic acid when boiled under reflux with dilute alkali followed by acidification? 1 CH₃CH₂Cl 2 CH₃CO₂CH₃ 3 CH₃CN

Worked Solution & Example Answer:Which compounds will produce ethanoic acid when boiled under reflux with dilute alkali followed by acidification? 1 CH₃CH₂Cl 2 CH₃CO₂CH₃ 3 CH₃CN - CIE - A-Level Chemistry - Question 39 - 2011 - Paper 1

Step 1

1 CH₃CH₂Cl

96%

114 rated

Answer

When CH₃CH₂Cl (ethyl chloride) is boiled with dilute alkali, it undergoes hydrolysis to form ethanol. Upon acidification, it does not produce ethanoic acid.

Step 2

2 CH₃CO₂CH₃

99%

104 rated

Answer

CH₃CO₂CH₃ (methyl acetate) will undergo hydrolysis in the presence of dilute alkali to form methanol and acetic acid when acidified. Therefore, this compound will produce ethanoic acid.

Step 3

3 CH₃CN

96%

101 rated

Answer

CH₃CN (acetonitrile) can be hydrolyzed under reflux with dilute alkali, yielding acetic acid upon subsequent acidification, thus producing ethanoic acid.

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