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What is the pH of the buffer solution that contains 2.0 g of NH4Cl in 250 mL of 0.10 M NH3? is the final pH lower or higher than the pH of the 0.10 M ammonia solution? (Kb for ammonia is 1.8 x 10^-5.) pH of the buffer = ____ The final pH is ____ than the pH of the 0.10 M ammonia solution.