Question

Which compound can exist in a dipolar (zwitter ion) state
A. `C_(6)H_(5)CH_(2)CH(N=CH_(2))COOH`
B. `(CH_(3))_(2)CHCH(NH_(2))COOH`
C. `C_(6)H_(5)CONHCH_(2)COOH`
D. `HOO"CC"H_(2)CH_(2)COCOOH`

Answer 1

Correct Answer - B
`alpha`-Amino acids exists as zwitter ion.
`(CH_(3))_(2)CH-underset(NH_(2))underset(|)CH-COOH to (CH_(3))_(2)CH-underset("Zwitter ion")underset(""^(+)NH_(3))underset(|)CH-COO^(-)`