The letters A to H in the table below represent eight organic compounds - NSC Physical Sciences - Question 2 - 2022 - Paper 2
Question 2
The letters A to H in the table below represent eight organic compounds.
A
B
C
Pent-2-ene
D
CH₃CH₂CHO
E
Butan-2-one
F
4,4-dimethylpent-2-yne
G
Butane
H
CH₃CH₂COOH... show full transcript
Worked Solution & Example Answer:The letters A to H in the table below represent eight organic compounds - NSC Physical Sciences - Question 2 - 2022 - Paper 2
Step 1
2.1.1 Is a ketone
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The letter that represents a compound that is a ketone is E.
Step 2
2.1.2 Has the general formula CₙH₂ₙ₋₂
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The letter that represents a compound with the general formula CₙH₂ₙ₋₂ is E (Butan-2-one).
Step 3
2.1.3 Is an isomer of 2-methylbut-2-ene
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The letter that represents a compound that is an isomer of 2-methylbut-2-ene is E (Butan-2-one).
Step 4
2.1.4 Has the same molecular formula as ethyl ethanoate
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The letter that represents a compound that has the same molecular formula as ethyl ethanoate (C₄H₈O₂) is E (Butan-2-one).
Step 5
2.2.1 IUPAC name of compound A
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The IUPAC name of compound A is 4-bromopent-2-ene.
Step 6
2.2.2 STRUCTURAL FORMULA of compound F
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The structural formula of compound F (4,4-dimethylpent-2-yne) is:
CH₃
|
CH₃-C≡C-CH₃
|
CH₃
Step 7
2.3.1 Homologous series to which it belongs
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Compound D (CH₃CH₂CHO) belongs to the aldehyde homologous series.
Step 8
2.3.2 NAME of its functional group
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The functional group of compound D is the aldehyde group (-CHO).
Step 9
2.3.3 STRUCTURAL FORMULA of its functional isomer
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The structural formula of a functional isomer of compound D (an alcohol) could be:
CH₃
|
CH₃-CH₂-OH
Step 10
2.4.1 The IUPAC name of a chain isomer
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The IUPAC name of a chain isomer of compound G (Butane) is 2-methylpropane.
Step 11
2.4.2 A balanced equation for its complete combustion
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The balanced equation for the complete combustion of butane (C₄H₁₀) is:
