Problem 2: Your facilitator asked you to prepare 450 mL of a buffer solution having a pH of 10.45 composed of Ammonia and Ammonium Chloride. Considering a final salt concentration of 0.123 M, determine the following. pkg = 3.69 Atomic weights: N: 14.01 H: 1.01 CI: 35.45 O: 15.99 63. What is the volume of Ammonia, in mL, needed to prepare the buffer solution? 64. What is the ratio of Ammonium chloride and Ammonia? 65. What is the weight, in grams, of Ammonium chloride? 66. What is the concentration of the Hydroxyl ion? 67. Determine the kb value. 68. Determine the mmoles of the salt present in the solution.
Problem 2: Your facilitator asked you to prepare 450 mL of a buffer solution having a pH of 10.45 composed of Ammonia and Ammonium Chloride. Considering a final salt concentration of 0.123 M, determine the following. pkg = 3.69 Atomic weights: N: 14.01 H: 1.01 CI: 35.45 O: 15.99 63. What is the volume of Ammonia, in mL, needed to prepare the buffer solution? 64. What is the ratio of Ammonium chloride and Ammonia? 65. What is the weight, in grams, of Ammonium chloride? 66. What is the concentration of the Hydroxyl ion? 67. Determine the kb value. 68. Determine the mmoles of the salt present in the solution.
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter2: Measurements And Calculations
Section: Chapter Questions
Problem 17ALQ: Complete the following and explain each in your own words: leading zeros are...
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Question
Transcribed Image Text:Direction: Solve what is being asked. Follow the directions below;
All answers, including values used in the solutions, must be rounded to the nearest two decimal places.
Always place a zero before the decimal point for values less than 1 | (example: .25 = 0.25)
Add trailing zeros to complete your answer to the 2nd decimal place, if necessary | (examples: 62.7 =
62.70; 123 123.00)
For answers with exponents, input the base number up to the 2nd decimal place before placing
x10^...(examples: 5.31x10^5; 9.60x10^-4)
●
●
●
DO NOT include spaces in between numbers, characters, and decimal points.
There is NO NEED to write the UNITS
Write your answers before the item
Transcribed Image Text:Problem 2: Your facilitator asked you to prepare 450 mL of a buffer solution having a pH of 10.45 composed of
Ammonia and Ammonium Chloride. Considering a final salt concentration of 0.123 M, determine the following.
pkg = 3.69
Atomic weights:
N: 14.01
H: 1.01
CI: 35.45
O: 15.99
63. What is the volume of Ammonia, in mL, needed to prepare the buffer solution?
64. What is the ratio of Ammonium chloride and Ammonia?
65. What is the weight, in grams, of Ammonium chloride?
66. What is the concentration of the Hydroxyl ion?
67. Determine the kb value.
68. Determine the mmoles of the salt present in the solution.
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