What is the pH of the buffer solution that contains 2.2 g of NH4Cl in 250 mL of 0.12 M NH3? Is the final pH lower than the pH of the 0.12 M ammonia solution?

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pearcoyote735Lv1

11 Dec 2019

What is the pH of the buffer solution that contains 2.2 g of NH₄Cl in 250 mL of 0.12 M NH₃? Is the final pH lower than the pH of the 0.12 M ammonia solution?

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Alyssa Mae RemarimLv10

19 Nov 2020

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A buffer is made by adding 0.12 mol NH4Cl and 0.15 mol NH3 to enough water to make 0.250 L of solution. (Ka NH4+/NH3= 5.6 x10â10)

a) Calculate the pH of the buffer solution

b) What is the pH after the addition of 10.00 mL of 0.1 M NaOH to 90.00 mL of this buffer solution? Compare to pH in part a.

c) What is the pH of a solution made by adding 10.00 mL of 0.1 M NaOH to 90.00 mL of pure water? Compare to pH in part b.

Calculate the pH of the following using the Henderson-Hasselbalch approach:

A solution that is 0.12 M in NH₃ and 0.18 M in NH₄Cl

Calculate the pH of the buffer when 50.00 mL of 0.12 M NH3 and 5.30 mL of 1.0 M HCl are mixed. (The pH is 8.37) Calculate the pH of the buffer after adding 5.0 mL of 0.10 M NaOH to the previous solution.

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What is the pH of the buffer solution that contains 2.2 g of NH₄Cl in 250 mL of 0.12 M NH₃? Is the final pH lower than the pH of the 0.12 M ammonia solution?

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