Calculate the values expected for the total alkalinity and for the phenol- phthalein alkalinity of a 25°C saturated solution of calcium carbonate in water, and compare them to the values for a solution that also is in equilib- rium with atmospheric carbon dioxide. Use the concentrations quoted in the last column of Table 10-4.

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
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Chapter10: Effect Of Electrolytes On Chemical Equilibria
Section: Chapter Questions
Problem 10.11QAP
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Calculated lon Concentrations for Aqueous
Equilibrium Systems
TABLE 10-4
Ion
CaCO, Only
CO, and CaCO,
HCO,-
9.9 x 10-5 M
1.05 x 10-3 M
CO,?-
8.7 x 10-6 M
Ca?+
9.9 x 10-5 M
5.3 x 10-4 M
OH-
9.9 x 10-5 M
1.7 x 10-6 M
H*
1.0 x 10-10 M
5.7 x 10-9 M
pH
10.0
8.2
Transcribed Image Text:Calculated lon Concentrations for Aqueous Equilibrium Systems TABLE 10-4 Ion CaCO, Only CO, and CaCO, HCO,- 9.9 x 10-5 M 1.05 x 10-3 M CO,?- 8.7 x 10-6 M Ca?+ 9.9 x 10-5 M 5.3 x 10-4 M OH- 9.9 x 10-5 M 1.7 x 10-6 M H* 1.0 x 10-10 M 5.7 x 10-9 M pH 10.0 8.2
Calculate the values expected for the total alkalinity and for the phenol-
phthalein alkalinity of a 25°C saturated solution of calcium carbonate in
water, and compare them to the values for a solution that also is in equilib-
rium with atmospheric carbon dioxide. Use the concentrations quoted in the
last column of Table 10-4.
Transcribed Image Text:Calculate the values expected for the total alkalinity and for the phenol- phthalein alkalinity of a 25°C saturated solution of calcium carbonate in water, and compare them to the values for a solution that also is in equilib- rium with atmospheric carbon dioxide. Use the concentrations quoted in the last column of Table 10-4.
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