16-02-2024
Chemistry

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A biochemist wishes to use glycine to buffer a solution at pH 9.0. Glycine has two ionizable groups, with pKa values of 2.34, and 9.6. She has 1 liter of a 0.1 M glycine solution at pH 2.94. She also has prepared solutions of strong acid and strong base, 1.0 M HCl and 1.0 M NaOH. Which solution, HCl or NaOH, must she add to bring the pH to 9.0?

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