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

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

NTA AbhyasNTA Abhyas 2020

Solution:

Solution
Hence, the correct order is
$Asp < Gly < Lys < Arg$