4. a. A buffer is prepared by mixing 0.900 mole of ammonia and 0.850 mole of ammonium chloride to form an aqueous solution with a total volume of 0.500 litre. b. 30.0 ml of 1.00 M NaOH was added to 350 ml of this solution. What is the pH of the solution before and after the addition of NaOH? Show Transcribed Text Alternatively, how many moles of NaOH are required to react with 0.850 mol of ammonium chloride to form an aqueous buffer solution with a total volume of 0.500 litres, and a pH of 9.00?

4. a. A buffer is prepared by mixing 0.900 mole of ammonia and 0.850 mole of ammonium chloride to form an aqueous solution with a total volume of 0.500 litre. b. 30.0 ml of 1.00 M NaOH was added to 350 ml of this solution. What is the pH of the solution before and after the addition of NaOH? Show Transcribed Text Alternatively, how many moles of NaOH are required to react with 0.850 mol of ammonium chloride to form an aqueous buffer solution with a total volume of 0.500 litres, and a pH of 9.00?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Answer the following questions by circling the correct response. a. A0.100 M solution of NaOH has a higher pH than a 0.100 M solution of Ba(OH)2. TRUE / FALSE b. What is the pH of a solution made by dissolving Fe(NO:)2 in water? ACIDIC / NEUTRAL / BASIC c. If you have a buffer solution made from 1 parts ammonia and 2 parts ammonium ions, what is the pH of that solution? 8.95 / 9.55 d. You have a saturated solution of NH,CI with a small amount of undissolved NH,CI sitting at the bottom of the container. Adding which of the following would cause the solid NHẠCI to dissolve? Naci / HCI / NaOH e. The entropy of the universe increases when NaOH is dissolved into water. TRUE / FALSE
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