`overset(+)NH_(3)-CH(R )-CO_(2)H` has its `Ka_(1)=10^(-7)`. The isoele – InterviewSolution

InterviewSolution

1.	`overset(+)NH_(3)-CH(R )-CO_(2)H` has its `Ka_(1)=10^(-7)`. The isoelectric point of the a-amino acid occur at pH = 8.2 hence `pKa_(2)` of the conjugate acid of the `alpha` -amino acid is equal to :A. 9.4B. 1.2C. 7.6D. 2.4
Answer» Correct Answer - a 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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