Titration of the amino acid lysine has three \( \mathrm{pKa} \) values viz., \( \mathrm{pKa}_{1}...

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Titration of the amino acid lysine has three \( \mathrm{pKa} \) values viz., \( \mathrm{pKa}_{1} \) (2.18), \( \mathrm{pKa}_{2}(8.95) \) and \( \mathrm{pKa}_{3}(10.53) \). The \( \mathrm{pH} \) at which this amino acid will show no net migration in an electric field is
(a) 5.57
(b) 9.74
(c) 6.35
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