Calculating the composition of a buffer of a given pH A chemistry graduate student is given 300. mL of a 0.80M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with K=4.9 × 10 What mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.65? - 10 9.31 You may assume that the volume of the solution doesn't change when the NaCN is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. 300x 80
Calculating the composition of a buffer of a given pH A chemistry graduate student is given 300. mL of a 0.80M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with K=4.9 × 10 What mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.65? - 10 9.31 You may assume that the volume of the solution doesn't change when the NaCN is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. 300x 80
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 34QRT
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![Calculating the composition of a buffer of a given pH
A chemistry graduate student is given 300. mL of a 0.80 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with
K=4.9 × 10
What mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.65?
- 10
9.31
You may assume that the volume of the solution doesn't change when the NaCN is dissolved in it. Be sure your answer has a unit
symbol, and round it to 2 significant digits.
300x
80](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4d68ba1a-a77d-4e90-8eff-45b23a1c287b%2F0c61b9e6-17aa-40f5-9c46-800e28f29270%2Fdpt3635_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Calculating the composition of a buffer of a given pH
A chemistry graduate student is given 300. mL of a 0.80 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with
K=4.9 × 10
What mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.65?
- 10
9.31
You may assume that the volume of the solution doesn't change when the NaCN is dissolved in it. Be sure your answer has a unit
symbol, and round it to 2 significant digits.
300x
80
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