How many grams of solid calcium cyanide, Ca(CN)₂ must be added to 200.0 ml of 0.370M hydrocyanic acid in order to form a buffer with a pH = 9.20? [You may assume that the solid dissolves completely and that the change in volume is negligible upon addition of the solid.]

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 59QRT
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How many grams of solid calcium cyanide, Ca(CN)₂ must be added to 200.0 ml of 0.370M hydrocyanic acid in order to form a buffer with a pH = 9.20? [You may assume that the solid dissolves completely and that the change in volume is negligible upon addition of the solid.]

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