Assertion: Alpha (α) -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 (-COOH) is captured by amino group (-NH 2) having lone pair of electrons.

Question

Assertion: Alpha (α) -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 (-COOH) is captured by amino group (-NH 2) having lone pair of electrons. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

NH2-CH2-COOH is a typical α amino acid. In solution it exists as, internal salt or Z witter ion, (+NH3-CH2-COO-) because the proton (H+ ) of COOH group is captured by -NH2 group as NH2 has a lone pair of electrons on N atom.

Q. Assertion : Alpha $(α)$ -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 (-COOH) is captured by amino group $(- N H_{2})$ having lone pair of electrons.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

$N H_{2} - C H_{2} - COO H$ is a typical $α$ amino acid. In solution it exists as, internal salt or Z witter ion,

$(^{+} N H_{3} - C H_{2} - CO O^{-})$

because the proton ( $H^{+}$ ) of COOH group is captured by $- N H^{2}$ group as $N H^{2}$ has a lone pair of electrons on N atom.

Q. Assertion : Alpha (α) -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 (-COOH) is captured by amino group (−NH2​) having lone pair of electrons.