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One dissolves 5.35 grams NH4Cl in enough water to make 100 mL solution. To this they add 40 mL 1.0 M NaOH solution and stir

One dissolves 5.35 grams NH4Cl in enough water to make 100 mL solution. To this they add 40 mL 1.0 M NaOH solution and stir well. The pKa of NH4+ = 9.25. What is the final pH of this solution. Assume that equimolar amounts of OH- and NH4+ react to form NH3.

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