1.

At pH 4, glycine exists asA. `H_(3)N^(+)-CH_(2)CO O^(-)`B. `H_(3)N^(+)-CH_(2)CO OH`C. `H_(2)NCH_(2)CHO OH`D. `H_(2)NCH_(2)CO O^(-)`

Answer» Correct Answer - B
In the acidic medium `(DeltaH=4), C ClO^(-)` groups is protonated.
`H_(3)overset(+)(N)-CH_(2)CO O^(-) overset(H^(+))hArr H_(3)overset(+)(N)-CH_(2)CO OH`


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