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30 mL of 1 M HCl were added to 200 mL of 0.1 M lysine solution...

30 mL of 1 M HCl were added to 200 mL of 0.1 M lysine solution having pH = pKa of the side-chain amino group. What is the new pH? pKa values for lysine are 2.18, 8.95 and (R-group) 10.53.

A) 2.18 B) 5.57 C) 8.95 D) 9.74 E) 10.53

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