| Assertion : Alpha (\[\alpha \])-amino acids exist as internal salt in solution as they have amino and carboxylic acid groups in near vicinity. |
| Reason : \[{{H}^{+}}\] ion given by carboxylic group \[\left( -COOH \right)\] is captured by amino group \[(-N{{H}_{2}})\] having lone pair of electrons. |
A) Assertion and reason both are correct statements and reason is correct explanation for assertion.
B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C) Assertion is correct statement but reason is wrong statement.
D) Assertion is wrong statement but reason is correct statement.
Correct Answer: A
Solution :
\[N{{H}_{2}}-C{{H}_{2}}-COOH\] is a typical a-amino acid. In solution it exists as, internal salt or zwitter ion,\[\left( \overset{+}{\mathop{N{{H}_{3}}}}\,-C{{H}_{2}}-CO{{O}^{-}} \right)\] because the proton \[\left( {{H}^{+}} \right)\] of COOH group is captured by \[N{{H}_{2}}\] group as \[N{{H}_{2}}\] has a lone pair of electrons on N atom.
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