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Which of the following heptanols are chiral 1-heptanol, 2-heptanol, 3-heptanol, 4-heptanol.
- a)All are chiral
- b)2-heptanol and 3-heptanol
- c)2-heptanol, 3-heptanol & 4-heptanol
- d)3-heptanol and 4-heptanol
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Which of the following heptanols are chiral 1-heptanol, 2-heptanol, 3-...
As you can see, the third carbon atom from the left has three different groups attached to it namely 1. hydroxyl groups attached to namely 1. hydroxyl,
2. ethyl
3. n-butyl,
4. hydrogen
Hence the mentioned carbon atom is a chiral centre. Now any molecule having one chiral centre is a chiral molecule, i.e. 2 forms namely (R) and (S) forms of the molecule exist.
Please note that if the molecule has more than one chiral centre, We cannot directly conclude that the molecule will be chiral.
2. ethyl
3. n-butyl,
4. hydrogen
Hence the mentioned carbon atom is a chiral centre. Now any molecule having one chiral centre is a chiral molecule, i.e. 2 forms namely (R) and (S) forms of the molecule exist.
Please note that if the molecule has more than one chiral centre, We cannot directly conclude that the molecule will be chiral.
Most Upvoted Answer
Which of the following heptanols are chiral 1-heptanol, 2-heptanol, 3-...
Chirality of Heptanols:
Heptanols are seven-carbon alcohols, and chirality refers to the property of having a non-superimposable mirror image. In order for a molecule to be chiral, it must have at least one chiral center, which is a carbon atom bonded to four different groups.
Explanation:
- 1-Heptanol: 1-Heptanol does not have a chiral center as the carbon atom attached to the hydroxyl group has two identical hydrogen atoms bonded to it.
- 2-Heptanol: 2-Heptanol has a chiral center at the second carbon atom from the hydroxyl group, making it chiral.
- 3-Heptanol: 3-Heptanol also has a chiral center at the third carbon atom from the hydroxyl group, making it chiral.
- 4-Heptanol: 4-Heptanol does not have a chiral center as the carbon atom attached to the hydroxyl group has two identical methyl groups bonded to it.
Therefore, only 2-Heptanol and 3-Heptanol are chiral due to the presence of a chiral center, while 1-Heptanol and 4-Heptanol are not chiral.
Heptanols are seven-carbon alcohols, and chirality refers to the property of having a non-superimposable mirror image. In order for a molecule to be chiral, it must have at least one chiral center, which is a carbon atom bonded to four different groups.
Explanation:
- 1-Heptanol: 1-Heptanol does not have a chiral center as the carbon atom attached to the hydroxyl group has two identical hydrogen atoms bonded to it.
- 2-Heptanol: 2-Heptanol has a chiral center at the second carbon atom from the hydroxyl group, making it chiral.
- 3-Heptanol: 3-Heptanol also has a chiral center at the third carbon atom from the hydroxyl group, making it chiral.
- 4-Heptanol: 4-Heptanol does not have a chiral center as the carbon atom attached to the hydroxyl group has two identical methyl groups bonded to it.
Therefore, only 2-Heptanol and 3-Heptanol are chiral due to the presence of a chiral center, while 1-Heptanol and 4-Heptanol are not chiral.
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