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Please calculate the pH of a buffer that contains 0.30 M ammonium chloride (NH4Cl) and 0.90 M aqueous ammonia (NH3 (aq)). The pKa is 9.25

Please calculate the pH of a buffer that contains 0.30 M ammonium chloride (NH4Cl) and 0.90 M aqueous ammonia (NH3 (aq)). The pKa is 9.25 at 25 C

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