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Question
Which of the following molecules form a Zwftter ion?
Options
\[\ce{CH3COOCH3}\]
\[\ce{H2NCH2COOH}\]
\[\ce{CH3COC2H5}\]
\[\ce{CH3CH2COOH}\]
MCQ
Solution
\[\ce{H2NCH2COOH}\]
Explanation:
Zwitter ion is a molecule containing a positively charged ion at one end and a negatively charged ion at the other. Among the given compounds amino acid, \[\ce{H2NCH2COOH}\] forms a Zwitterion which is shown below.
\[\begin{array}{cc}
\phantom{....................}\ce{O}\\
\phantom{....................}||\\
\ce{CH2 - COOH <=> CH2 - C - O-}\\
|\phantom{..................}|\phantom{.............}\\
\ce{NH2}\phantom{............}\ce{\underset{\text{(Zwitter ion)}}{^{+}NH3}}\phantom{......}
\end{array}\]
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Electrophilic Aromatic Substitution in Aromatic Amines
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