Amino acid glycine `(NH_(2)-CH_(2)-COOH)` exists as a zwitter ion in aq. Solution. The `K_(a)` and `K_(b)` values of glycine are `1.6xx10^(-10)(Pk_(a)=9.8)`and `2.5xx10^(-12)(pk_(b)=11.6)` respectively. The `K_(a)` and `K_(b)` values are for zwitter ion of Amino acid with following strctures `[NH_(3)^(+)-CH_(2)-COO^(-)]`
An aqueous solution of glycine has pH:

Options

A. nearly 7
B. nearly 7.9
C. nearly 6.1
D. nearly 11.5

Answer

c