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Buffer solutions are produced by combining an acid with its conjugate base. Consider a buffer made from boric acid (H3BO3) and sodium borate (NaB(OH)4). You want to make a buffer solution with a total borate concentration of 10 mM and a final pH of 9.0.Boric acid:pKa = 9.24H0 at 25C (kJ/mol)f-,...H3BO3-1072B(OH)4--1344H2O-285.83H+0Off-230.0a) How much sodium borate and boric acid will you need to this buffer?b) You might want to use the buffer from part (a) in an experiment conducted at elevatedtemperature. Will the pH of this buffer solution be higher or lower at a temperature of 40C?c) You also could pH 9 buffer by adding hydrochloric acid to a 10 mM solution of sodium borate. How much hydrochoric acid must be added to achieve a final pH of9.0 (at 25C)?

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