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  4. The increasing order of pKa of the following amino acids in aqueous solution is: Gly Asp Lys Arg

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Q. The increasing order of $pKa$ of the following amino acids in aqueous solution is :
$Gly\, Asp\, Lys\, Arg$

JEE MainJEE Main 2019Biomolecules

Solution:

Order of acidic strength :
So, $pK_a$
Asp < Gly < Arg < Lys

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