A reaction pathway to produce a primary alcohol is shown below - VCE - SSCE Chemistry - Question 1 - 2022 - Paper 1
Question 1
A reaction pathway to produce a primary alcohol is shown below.
C₂H₄(g)
HCl(g)
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Compound A
Compound B
Reagent(s)
primary alcohol
C₂H₄(g) re... show full transcript
Worked Solution & Example Answer:A reaction pathway to produce a primary alcohol is shown below - VCE - SSCE Chemistry - Question 1 - 2022 - Paper 1
Step 1
Identify the type of reaction that converts C₂H₄ into Compound A.
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Answer
The reaction that converts C₂H₄ into Compound A is an addition reaction. In this case, HCl adds across the double bond of the ethene (C₂H₄) to form a carbocation intermediate, which then rearranges to form Compound A.
Step 2
Write the semi-structural formula for Compound B in the box provided.
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Answer
The semi-structural formula for Compound B is: CH₃-CH₂-Cl (ethyl chloride), representing the branched isomer of the resulting product from the addition of HCl.
Step 3
State the reagent(s) required to convert Compound A into a primary alcohol in the box provided.
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Answer
The reagent required to convert Compound A into a primary alcohol is sodium borohydride (NaBH₄) for the reduction process, or directly using LiAlH₄ (Lithium aluminium hydride) which can also convert alkyl halides to primary alcohols.