Glycin has the structural formula NH_(2)-CH_(2)-COOH. Glycine has two dissociation constant for which K_(a)" and " K_(b) are 1.6xx10^(-10)" and "K_(b) is 2.5xx10^(12). Calculate the isoelectric point of glycine [Hint : If your answer is 5.12 then fill 0512 in OMR sheet. If your answer is 8.02 then fill 0802 in OMR sheet]

Glycin has the structural formula NH_(2)-CH_(2)-COOH. Glycine has two

1.	Glycin has the structural formula NH_(2)-CH_(2)-COOH. Glycine has two dissociation constant for which K_(a)" and " K_(b) are 1.6xx10^(-10)" and "K_(b) is 2.5xx10^(12). Calculate the isoelectric point of glycine [Hint : If your answer is 5.12 then fill 0512 in OMR sheet. If your answer is 8.02 then fill 0802 in OMR sheet]
Answer» Solution :`pI=overset(pK_(A1)+pK_(a2))underset(2)_""pK_(a)=-logK_(a)` `=(9.7958+2.39)/2=6.09` `pK_(a1)=-logK_(a)""pK_(B1)=-logK_(b)` `pK_(a1)=-log1.6xx10^(-10)""pK_(b1)=-log2.5xx10^(-12)` `pK_(a1)=9.79""pK_(b1)=11.6` `pK_(a1)+pK_(b1)=14` `pK_(a2)+11.6=14` `pK_(a2)=2.3979`