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Which compound does not show stereoisomerism? A 1,2-dichloropropene B 1,2-dichloropropane C 1,3-dichloropropene D 1,3-dichloropropane - AQA - A-Level Chemistry - Question 24 - 2017 - Paper 3
Question 24
Which compound does not show stereoisomerism? A 1,2-dichloropropene B 1,2-dichloropropane C 1,3-dichloropropene D 1,3-dichloropropane
Worked Solution & Example Answer:Which compound does not show stereoisomerism? A 1,2-dichloropropene B 1,2-dichloropropane C 1,3-dichloropropene D 1,3-dichloropropane - AQA - A-Level Chemistry - Question 24 - 2017 - Paper 3
Step 1
Step 2
Evaluate stereoisomerism for each compound
Answer
Stereoisomerism arises when there are different spatial arrangements of atoms.
- 1,2-dichloropropene (A): Can exhibit geometrical isomerism due to the presence of a double bond.
- 1,2-dichloropropane (B): Does not have a double bond; thus, it does not exhibit stereoisomerism.
- 1,3-dichloropropene (C): Similar to A, it can exhibit geometrical isomerism.
- 1,3-dichloropropane (D): Like B, lacks a double bond and thus does not show stereoisomerism.
Step 3
Identify the correct answer
Answer
From the evaluations:
- B: 1,2-dichloropropane and D: 1,3-dichloropropane do not show stereoisomerism. However, since the question asks for the compound that does not show it among the options presented:
Therefore, the correct answer is D: 1,3-dichloropropane.