1.

overset(+)NH_(3)-CH(R )-CO_(2)H hasits Ka_(1)=10^(-7). The isoelectric point of the a-amino acidoccur at pH = 8.2 hence pKa_(2) of the conjugate acid of the alpha -amino acid is equal to :

Answer»

9.4
1.2
7.6
2.4

Solution :ISOELECTRIC pH of a AMINOACID =`(pK_(a)^(1)+pK_(a)^(2))/(2)`
`:.""8.2=(7+pK_(a)^(2))/(2)`
`rArrpK_(a)^(2)=16.4-7=9.4`


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