Define the term homologous series - NSC Technical Sciences - Question 2 - 2022 - Paper 2
Question 2
Define the term homologous series.
Write down the letter (A–F) that represents the following:
2.2.1 Haloaklane
2.2.2 Functional isomers
2.2.3 Ketone
2.2.4 Unsatura... show full transcript
Worked Solution & Example Answer:Define the term homologous series - NSC Technical Sciences - Question 2 - 2022 - Paper 2
Step 1
Define the term homologous series.
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Answer
A homologous series is a group of organic compounds that share the same functional group and follow a similar general formula, differing from each other by a fixed unit, typically a —CH₂— group. Each member of the series exhibits similar chemical properties, while their physical properties show a gradual change.
Step 2
Write down the letter (A–F) that represents the following:
2.2.1 Haloaklane
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Answer
A
Step 3
Write down the letter (A–F) that represents the following:
2.2.2 Functional isomers
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Answer
D
Step 4
Write down the letter (A–F) that represents the following:
2.2.3 Ketone
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Answer
B
Step 5
Write down the letter (A–F) that represents the following:
2.2.4 Unsaturated hydrocarbon
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Answer
F
Step 6
Write down the IUPAC name of compound E.
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Answer
Butane
Step 7
Draw the structural formula of the following:
2.4.1 Compound C
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Answer
The structural formula of Methyl ethanoate (Compound C) is:
H O H
| || |
H—C—C—O—C—H
| | |
H H H
Step 8
Draw the structural formula of the following:
2.4.2 Functional group of compound F
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Answer
The functional group of Prop-1-ene (Compound F) is a carbon-carbon double bond, represented as:
