1) The pH of a buffer system containing NH3 and NH4Cl is found to be 9.35. Calculate the ratio NH3/NH4Cl.
2) The pH of a buffer system containing Na2HPO4 and KH2PO4 is found to be 6.66. Calculate the ratio Na2HPO4/KH2PO4.
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1) The pH of a buffer system containing NH3 and NH4Cl is found to be 9.35....
What is the pH of a buffer containing 0.25 M NH3 and 0.45 M NH4Cl?
6. (a) Calculate the pH of the 0.39 M NH3/ 0.73 M NH4Cl buffer system. pH = (b) What is the pH after the addition of 20.0 mL of 0.075 M NaOH to 80.0 mL of the buffer solution? pH =
What is the ratio of [NH4Cl]/[NH3] in order to make a NH3/NH4Cl buffer solution with pH=8.70. (Kb for NH3 is 1.8 x 10^–5)
a) Calculate the pH of a buffer that is 0.20 M NH3 and 0.20 M NH4Cl Correct? b) Calculate the pH after addition of 10 mL 0.10 M HCl to 65 mL of the buffer? c) Calculate the pH after addition of 5 mL of 1.0 M LiOH to 200 mL of the buffer?
16.17. Calculate the ph of the nh3 0.20 m/nh4cl 0.20 M dampening system. What is the Ph of the buffer dissolution after adding 10.0 ml of HCl 0.10 M to 65.0 ml of the dampening system.
Calculate the pH of a 0.20 M NH3/0.20 M NH4Cl buffer after the addition of 25.0 mL of 0.10 M HCl to 65.0 mL of the buffer.
Find the pH of a buffer that consists of 0.26 M NH3 and 0.18 M NH4Cl (pKb of NH3 = 4.75).
What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 35.00 mL of 12 M NH3 in enough water to make 1.000 L of solution? Kb = 1.80 × 10-5 for NH3. 9.26 9.58 8.93 11.69
a) Calculate the pH of a buffer system that contains o.200 M of NH3(aq) and o.200 M of NH4Cl(aq). The Kb of NH3(aq) is 18 x 10-5. Consult Textbook Numerical Answer pH b) Calculate the change in pH when 6.00 mL of 100 M HCl is added to 100.0 mL of the buffer solution. Numerical Answer: c) Calculate the change in pH when 6.00 mL of o.100 M NaOH is added to 100.0 mL of the buffer solution. Numerical Answer:
Indicate the pH range that selected the following buffer systems: a) NH3 / NH4Cl b) HOCl / NaOCl