Question

6. What is the pH of a 0.10 M HA solution that is 4.2% ionized? 7. HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 4.93 at 25.0 °C. The Ka of HZ is _______. 8. The pH of a 0.55 M aqueous solution ammonia, NH3, at 25.0 °C is 11.50. What is the value of Kb for NH3?

Name: 6 what is the ph of a 010 m ha solution that is 42 ionized 7 hz is a weak acid an aqueous solution of hz is prepared by dissolving 0020 mol of hz in sufficient water to yield 10 l of solutio 01602
Uploaded: 2022-04-04T21:44:50-08:00
Duration: 1 min 53 s
Channel: David Collins
Description: 6 what is the ph of a 010 m ha solution that is 42 ionized 7 hz is a weak acid an aqueous solution of hz is prepared by dissolving 0020 mol of hz in sufficient water to yield 10 l of solutio 01602

          6. What is the pH of a 0.10 M HA solution that is 4.2% ionized?
7. HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 4.93 at 25.0 °C. The Ka of HZ is _______.
8. The pH of a 0.55 M aqueous solution ammonia, NH3, at 25.0 °C is 11.50. What is the value of Kb for NH3?

6 what is the ph of a 010 m ha solution that is 42 ionized 7 hz is a weak acid an aqueous solution of hz is prepared by dissolving 0020 mol of hz in sufficient water to yield 10 l of solutio 01602

Added by Ricardo D.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert David Collins

04/04/2022

Step 1

2% ionized, which means that 4.2% of the HA molecules dissociate into H+ and A-. The concentration of H+ ions is 4.2% of the initial concentration of HA, which is 0.10 M. $$[H^+] = 0.042 \times 0.10 M = 0.0042 M$$ The pH of the solution is the negative logarithm of Show more…

Show all steps

Thanks for your feedback!

6. What is the pH of a 0.10 M HA solution that is 4.2% ionized? 7. HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 4.93 at 25.0 °C. The Ka of HZ is _______. 8. The pH of a 0.55 M aqueous solution ammonia, NH3, at 25.0 °C is 11.50. What is the value of Kb for NH3?