The correct IUPAC name for CH₃CH₂CHClCHOHCH₃ is
A - VCE - SSCE Chemistry - Question 16 - 2022 - Paper 1
Question 16
The correct IUPAC name for CH₃CH₂CHClCHOHCH₃ is
A. 3-chloropentan-4-ol
B. 3-chloropentan-2-ol
C. 2,3-chloro-pentanol
D. 3,2-chloro-pentanol
Worked Solution & Example Answer:The correct IUPAC name for CH₃CH₂CHClCHOHCH₃ is
A - VCE - SSCE Chemistry - Question 16 - 2022 - Paper 1
Step 1
Identify the structure of the compound
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Answer
The compound CH₃CH₂CHClCHOHCH₃ contains a five-carbon chain (pentane) with a chlorine substituent and an alcohol (hydroxyl) group.
Step 2
Number the carbon chain
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Answer
Number the longest carbon chain from the end nearest to the functional group (the -OH group). This results in the following numbering:
1 - CH₃
2 - CH₂
3 - CH
4 - CH₂Cl
5 - CH₃
Step 3
Determine the positions of the substituents
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Answer
The chlorine (Cl) is on the 3rd carbon, and the hydroxyl (-OH) group is on the 2nd carbon. Therefore, the compound can be designated as 3-chloropentan-2-ol.
Step 4
Select the correct IUPAC name
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Answer
Based on the analysis, the correct IUPAC name for the compound is:
3-chloropentan-2-ol (Option B).
