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13) Determine the pOH of a 0.188 M NH3 solution at 25°C. The Kb of NH3 is 1.76 x 10-5. A) 5.480 B) 2.740 C) 8.520 D) 11.260 E) 12.656

13) Determine the pOH of a 0.188 M NH3 solution at 25°C. The Kb of NH3 is 1.76 x 10-5. A) 5.480 B) 2.740 C) 8.520 D) 11.260 E) 12.656

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter14: Acid-base Equilibria
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Problem 62E: For which of the following solutions must we consider the ionization of water when calculating the...
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13) Determine the pOH of a 0.188 M NH3 solution at 25°C. The Kb of NH3 is 1.76 x 10-5. A) 5.480 B) 2.740 C) 8.520 D) 11.260 E) 12.656 14) Determine the pH of a 0.22 M NaF solution at 25°C. The Ka of HF is 3.5 x 10-5. A) 10.20 B) 5.10 C) 8.90 D) 11.44 E) 2.56 15) Calculate the pH of a buffer that is 0.225 M HC2H302 and 0.162 M KC2H3O2. The Ka for HC2H302 is 1.8 x 10-5. A) 4.89 B) 9.11 C) 4.74 D) 9.26 E) 4.60 16) Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4CI with 200.0 ml. of 0.12 M NH3. The Kb for NH3 is 1.8 x 10-5. A) 9.06 B) 9.45 C) 4.55 D) 4.74 E) 9.26 17) A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LIC7H502. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCI. The Ka for HC7H5O2 is 6.5 x 10-5. A) 4.19 B) 5.03 C) 4.41 MacBook Air
Transcribed Image Text:13) Determine the pOH of a 0.188 M NH3 solution at 25°C. The Kb of NH3 is 1.76 x 10-5. A) 5.480 B) 2.740 C) 8.520 D) 11.260 E) 12.656 14) Determine the pH of a 0.22 M NaF solution at 25°C. The Ka of HF is 3.5 x 10-5. A) 10.20 B) 5.10 C) 8.90 D) 11.44 E) 2.56 15) Calculate the pH of a buffer that is 0.225 M HC2H302 and 0.162 M KC2H3O2. The Ka for HC2H302 is 1.8 x 10-5. A) 4.89 B) 9.11 C) 4.74 D) 9.26 E) 4.60 16) Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4CI with 200.0 ml. of 0.12 M NH3. The Kb for NH3 is 1.8 x 10-5. A) 9.06 B) 9.45 C) 4.55 D) 4.74 E) 9.26 17) A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LIC7H502. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCI. The Ka for HC7H5O2 is 6.5 x 10-5. A) 4.19 B) 5.03 C) 4.41 MacBook Air
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