When glycinium hydrochloride P \( \left(\mathrm{NH}_{2} \mathrm{CH}...

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When glycinium hydrochloride
P \( \left(\mathrm{NH}_{2} \mathrm{CH}_{2} \mathrm{COOH} \cdot \mathrm{HCl}\right) \) is titrated against \( \mathrm{NaOH}, \mathrm{pH} \)

W at the first half equivalence point is 2.40 and the \( \mathrm{pH} \) at second half equivalence point is 9.60 . The \( \mathrm{pH} \) at first equivalence point is
(1) 2.40
(2) 9.60
(3) 6.00
(4) 7.20
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