Question:
Which of the following molecules is capable of forming Zwitter ion?
Which of the following molecules is capable of forming Zwitter ion?
Show Hint
It needs both an acidic group and a basic group in the same molecule.
Updated On: Oct 1, 2026
- \(\text{NH}_2\text{CH}_2\text{COOH}\)
- \(\text{CH}_3\text{COOH}\)
- \(\text{CH}_3\text{CH}_2\text{NH}_2\)
- \(\text{CCl}_3\text{NO}_2\)
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The Correct Option is A
Solution and Explanation
Step 1: Idea
A zwitter ion forms when a proton moves from an acidic group to a basic group within the same molecule.
Step 2: Check
\(NH_2CH_2COOH\) (glycine) has both \(-COOH\) and \(-NH_2\), so it forms \(^+NH_3CH_2COO^-\).
Acetic acid has only an acid group, ethylamine only a basic group, and \(CCl_3NO_2\) has neither.
Final Answer:
Glycine forms a zwitter ion. \[ \boxed{\text{(A)}\ NH_2CH_2COOH} \]
A zwitter ion forms when a proton moves from an acidic group to a basic group within the same molecule.
Step 2: Check
\(NH_2CH_2COOH\) (glycine) has both \(-COOH\) and \(-NH_2\), so it forms \(^+NH_3CH_2COO^-\).
Acetic acid has only an acid group, ethylamine only a basic group, and \(CCl_3NO_2\) has neither.
Final Answer:
Glycine forms a zwitter ion. \[ \boxed{\text{(A)}\ NH_2CH_2COOH} \]
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