-10 A chemistry graduate student is given 125. mL of a 1.80 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with K=4.9 × 10, What %3D mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH =9.20? 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.

-10 A chemistry graduate student is given 125. mL of a 1.80 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with K=4.9 × 10, What %3D mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH =9.20? 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.

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 43QRT

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