Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter14: Acids And Bases
Section14.5: Ionization Constants Of Acids And Bases
Problem 14.12CE
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Question
What is the pH of a 0.370 M solution of Ca(NO₂)₂ (Ka of HNO₂ is 4.5 × 10⁻⁴)?
Expert Solution
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Step 1
Given : Concentration of Ca(NO2)2 = 0.370 M
And Ka of HNO2 = 4.5 X 10-4
Since Ca(NO2)2 is a completely soluble ionic compound.
Hence it will dissociate into ions completely in solution.
=> Concentration of NO2- in solution = concentration of Ca(NO2)2 taken X 2 = 0.370 X 2 = 0.740 M
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