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14. At 25°C, consider a solution that contains the following two equilibrium reactions. pK₂ = 6.37 H₂CO3(aq) + H₂O (1) HCO3- (aq) + H3O+ (aq) H₂PO4 (aq) + H₂O (1) ⇒ HPO4²- (aq) + H3O+ (aq) pka = 7.21 At pH 7.21, which one of the following is true about the relative amounts of acids and conjugate bases present in solution? a. b. C. d. e. [H₂CO3] > [HCO3] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] < [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] [HCO3] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] > [HPO4²-] <

14. At 25°C, consider a solution that contains the following two equilibrium reactions. pK₂ = 6.37 H₂CO3(aq) + H₂O (1) HCO3- (aq) + H3O+ (aq) H₂PO4 (aq) + H₂O (1) ⇒ HPO4²- (aq) + H3O+ (aq) pka = 7.21 At pH 7.21, which one of the following is true about the relative amounts of acids and conjugate bases present in solution? a. b. C. d. e. [H₂CO3] > [HCO3] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] < [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] [HCO3] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] > [HPO4²-] <

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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14. At 25°C, consider a solution that contains the following two equilibrium reactions. H₂CO3 (aq) + H₂O (1) H₂PO4 (aq) + H₂O (1) HCO3- (aq) + H3O+ (aq) pK₂ = 6.37 HPO4²- (aq) + H3O+ (aq) pK₂ = 7.21 At pH 7.21, which one of the following is true about the relative amounts of acids and conjugate bases present in solution? b. a. [H₂CO3] > [HCO3] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] < [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] [HCO3-] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] > [HPO4²-] C. d. e. <
Transcribed Image Text:14. At 25°C, consider a solution that contains the following two equilibrium reactions. H₂CO3 (aq) + H₂O (1) H₂PO4 (aq) + H₂O (1) HCO3- (aq) + H3O+ (aq) pK₂ = 6.37 HPO4²- (aq) + H3O+ (aq) pK₂ = 7.21 At pH 7.21, which one of the following is true about the relative amounts of acids and conjugate bases present in solution? b. a. [H₂CO3] > [HCO3] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] < [HCO3] and [H₂PO4] = [HPO4²-] [H₂CO3] [HCO3-] and [H₂PO4] > [HPO4²-] [H₂CO3] = [HCO3] and [H₂PO4] > [HPO4²-] C. d. e. <
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