2) The above weak base, BOH having K, of 1.8x10 is required to transform into a Buffer solution. The BOH concentration is 0.25 M, and you are given Hydrochloric acid of 0.25 M, BCI salt (MW- 53.5 g/mol). Using them do following tasks. a) Identify the two ways to prepare the buffer solution of B'/BOH. b) You are requested to make a buffer solution of pH 9.25, write a protocol and explain.

2) The above weak base, BOH having K, of 1.8x10 is required to transform into a Buffer solution. The BOH concentration is 0.25 M, and you are given Hydrochloric acid of 0.25 M, BCI salt (MW- 53.5 g/mol). Using them do following tasks. a) Identify the two ways to prepare the buffer solution of B'/BOH. b) You are requested to make a buffer solution of pH 9.25, write a protocol and explain.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 12QAP: A buffer is prepared by dissolving 0.062 mol of sodium fluoride in 127 mL of 0.0399 M hydrofluoric...

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A buffer was prepared by mixing exactly 200 mL of a 0.60 M NH3 solution and 300 mL of a 0.30 M NH4Cl solution. For NH3, Kb=1.8 x 10-5. What is the pH of this buffer, if we assume a final volume of 500 mL?
The desired pH is 6.4 in creating a buffer system/buffer solution of about 50-60mL. Therefore, a student picks Silicic Acid Si(OH)4, as 1mL of 1M of the acid has a pH of 6.4, which also has a pKa of 9.82. What is the ratio HA/A- and ratio A-/HA-? The buffering capacity will be checked by the addition of 1mL of 1M HCl or 1mL of 1M NaOH and should not change by more than 0.25pH units.
A buffer was prepared by mixing exactly 200 mL of a 0.60 M NH3 solution and 300 mL of a 0.30 M NH4Cl solution. For NH3, Kb=1.8 x 10-5. We assume a final volume of 500 mL . What will be the pH after 0.020 mol of HCl is added?
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