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Which one of the following chemical compounds contains a chiral carbon centre? A - VCE - SSCE Chemistry - Question 19 - 2022 - Paper 1
Question 19
Which one of the following chemical compounds contains a chiral carbon centre? A. glycine B. glycerol C. butan-2-ol D. 1,1-dichloropropane
Worked Solution & Example Answer:Which one of the following chemical compounds contains a chiral carbon centre? A - VCE - SSCE Chemistry - Question 19 - 2022 - Paper 1
Step 1
Identify chiral carbon compounds
Answer
A chiral carbon is defined as a carbon atom that is bonded to four different groups. Evaluate each option:
A. Glycine - This cannot be chiral because it has two identical amino groups (NH2).
B. Glycerol - This molecule has three carbon atoms with two hydroxyl groups on the second carbon, resulting in two identical groups, hence it is not chiral.
C. Butan-2-ol - This carbon atom is connected to an -OH group, a hydrogen, a butyl group, and a methyl group, making it chiral.
D. 1,1-dichloropropane - This is also not chiral due to identical groups (two chlorines on one carbon).
The only compound with a chiral center is Butan-2-ol.