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H2PO4-1 Is Commonly Used in Making Buffer Solutions with a PH

Question 51

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H2PO4-1 is commonly used in making buffer solutions with a pH near your body's pH. Given that Ka = 6.2 x10-8 at 25˚C for the following acid-base reaction, determine ΔG˚:H2PO4-1(aq) + H2O(l) H<sub>2</sub>PO<sub>4</sub><sup>-1</sup> is commonly used in making buffer solutions with a pH near your body's pH. Given that K<sub>a</sub> = 6.2 x10<sup>-8</sup> at 25˚C for the following acid-base reaction, determine ΔG˚:H<sub>2</sub>PO<sub>4</sub><sup>-1</sup><sub>(</sub><sub>aq</sub><sub>)</sub> + H<sub>2</sub>O<sub>(</sub><sub>l)</sub><sub> </sub> HPO<sub>4</sub><sup>-2</sup><sub>(</sub><sub>aq</sub><sub>)</sub> + H<sub>3</sub>O<sup>+</sup><sub>(</sub><sub>aq</sub><sub>)</sub> HPO4-2(aq) + H3O+(aq)

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