A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca2+ cation and an unknown anion X-, which undergoes hydrolysis. a. Calculate the Kh or Kb of X- b. Given the following Ka values of different weak acids, determine the identity of X-.

Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.56PAE: 9.56 Using heats of formation tabulated in Appendix E, calculate the heats of reaction for the...
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A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca2+ cation and an unknown anion X-, which undergoes hydrolysis. a. Calculate the Kh or Kb of X- b. Given the following Ka values of different weak acids, determine the identity of X-.
Weak
Ka
acids
2.00
HIO
x 10
11
6.17
HCN
x 10
10
1.80
CH3COOH x 10°
5
4.00
HNO₂
x 10
4
Transcribed Image Text:Weak Ka acids 2.00 HIO x 10 11 6.17 HCN x 10 10 1.80 CH3COOH x 10° 5 4.00 HNO₂ x 10 4
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