a. Butanoic acid is the simplest carboxylic acid that is also classified as a fatty acid - VCE - SSCE Chemistry - Question 7 - 2016 - Paper 1
Question 7
a. Butanoic acid is the simplest carboxylic acid that is also classified as a fatty acid. Butanoic acid may be synthesised as outlined in the following reaction flow... show full transcript
Worked Solution & Example Answer:a. Butanoic acid is the simplest carboxylic acid that is also classified as a fatty acid - VCE - SSCE Chemistry - Question 7 - 2016 - Paper 1
Step 1
Draw the structural formula of but-1-ene in the box provided.
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Answer
The structural formula for but-1-ene is:
H H
| |
H--C==C--H
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H H
This shows the double bond between the first and second carbon atoms.
Step 2
State the reagent(s) needed to convert but-1-ene to Compound Y in the box provided.
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Answer
The reagents required to convert but-1-ene to Compound Y (butan-1-ol) are:
H2O (water)
H2SO4 (sulfuric acid) as a catalyst.
Step 3
Write the systematic name of Compound Y in the box provided.
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Answer
The systematic name of Compound Y is butan-1-ol.
Step 4
Write the semi-structural formula of butanoic acid in the box provided.
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Answer
The semi-structural formula of butanoic acid is:
H O
| ||
H--C--C--O--H
| |
H H
This represents butanoic acid with the carboxylic functional group.
Step 5
Write a balanced half-equation for the conversion of Cr2O7^2- to Cr^3+.
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Answer
The balanced half-equation for the reduction of dichromate to chromium (III) is:
Cr2O7^2- + 14 H^+ + 6 e- → 2 Cr^3+ + 7 H2O
This equation reflects the stoichiometric relationship during the reduction process.
