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Which of the following does not exist as a zwitter ion?
- a)Glycine
- b)Glutamic acid
- c)Sulphanilic acid
- d)p-aminobenzoic acid
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following does notexist as a zwitter ion?a)Glycineb)Gluta...
Explanation:
Glycine:
- Glycine exists as a zwitter ion in its neutral form at physiological pH.
- It contains both an amino group (NH2) and a carboxyl group (COOH), allowing it to act as a zwitter ion.
Glutamic acid:
- Glutamic acid is another amino acid that exists as a zwitter ion.
- It contains both an amino group and a carboxyl group, enabling it to carry both positive and negative charges.
Sulphanilic acid:
- Sulphanilic acid also exists as a zwitter ion due to the presence of an amino group and a sulfonic acid group.
- These functional groups allow it to have both positive and negative charges simultaneously.
p-aminobenzoic acid:
- P-aminobenzoic acid does not exist as a zwitter ion because it lacks a carboxyl group.
- Without a carboxyl group, it cannot carry both positive and negative charges simultaneously, making it not a zwitter ion.
Glycine:
- Glycine exists as a zwitter ion in its neutral form at physiological pH.
- It contains both an amino group (NH2) and a carboxyl group (COOH), allowing it to act as a zwitter ion.
Glutamic acid:
- Glutamic acid is another amino acid that exists as a zwitter ion.
- It contains both an amino group and a carboxyl group, enabling it to carry both positive and negative charges.
Sulphanilic acid:
- Sulphanilic acid also exists as a zwitter ion due to the presence of an amino group and a sulfonic acid group.
- These functional groups allow it to have both positive and negative charges simultaneously.
p-aminobenzoic acid:
- P-aminobenzoic acid does not exist as a zwitter ion because it lacks a carboxyl group.
- Without a carboxyl group, it cannot carry both positive and negative charges simultaneously, making it not a zwitter ion.
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Which of the following does notexist as a zwitter ion?a)Glycineb)Gluta...
The lone pair of electrons on the -NH2 group is donated towards the benzene ring due to resonance effect. As a result, acidic character of -COOH group and basic character of -NH2 group decrease. Therefore, the weakly acidic -COOH group cannot transfer an H+ ion to the weakly basic -NH2 group. Thus, o- and p-aminobenzoic acids do not exist as zwitter ions.
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Which of the following does notexist as a zwitter ion?a)Glycineb)Glutamic acidc)Sulphanilic acidd)p-aminobenzoic acidCorrect answer is option 'D'. Can you explain this answer?
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