A chemistry graduate student is given 300. mL of a 1.40M ammonia (NH, solution. Ammonia is a weak base with K, = 1.8 x 10°. What mass of NH,Br should the student dissolve in the NH, solution to turn it into a buffer with pH =9.81? You may assume that the volume of the solution doesn't change when the NH, Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
A chemistry graduate student is given 300. mL of a 1.40M ammonia (NH, solution. Ammonia is a weak base with K, = 1.8 x 10°. What mass of NH,Br should the student dissolve in the NH, solution to turn it into a buffer with pH =9.81? You may assume that the volume of the solution doesn't change when the NH, Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.78QE
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![A chemistry graduate student is given 300. mL of a 1.40M ammonia (NH, solution. Ammonia is a weak base with K, =1.8 × 10 °. What mass of NH, Br
-5
should the student dissolve in the NH, solution to turn it into a buffer with pH =9.81?
You may assume that the volume of the solution doesn't change when the NH,Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2
4
significant digits.
x10
Explanation
Check
Accessibili
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Transcribed Image Text:A chemistry graduate student is given 300. mL of a 1.40M ammonia (NH, solution. Ammonia is a weak base with K, =1.8 × 10 °. What mass of NH, Br
-5
should the student dissolve in the NH, solution to turn it into a buffer with pH =9.81?
You may assume that the volume of the solution doesn't change when the NH,Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2
4
significant digits.
x10
Explanation
Check
Accessibili
2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center
MacBook Pro
<>
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