Answer the following, include your work and reasoning 1) Put the following three reactions in the order of increasing Kc, (smallest Kc first) HCOOH has Ka = 1.7 x 10-4. HCOOH(aq) +H2O D HCOO-(aq) + H3O+(aq) HCOOH(aq) +OH-(aq) D HCOO-(aq) + H2O III. HCOO-(aq) + H2O D HCOOH(aq) + OH-(aq) 2) A basic buffer solution was prepared by mixing solutions of NH3 and NH4Br. At equilibrium, the concentration ratio, [NH4+]/[NH3] was 2.50. Determine the OH- concentration in this buffer solution. NH3 is a base with Kb = 1.75 x 10-5. 3) Calculate the equilibrium constant, Kc, of the reaction: HCO3-(aq) + HCO3-(aq) ↔ H2CO3(aq) + CO32- , Kc = ? Based on your result, do you expect this reaction to occur in the left-to-right direction?
Answer the following, include your work and reasoning 1) Put the following three reactions in the order of increasing Kc, (smallest Kc first) HCOOH has Ka = 1.7 x 10-4. HCOOH(aq) +H2O D HCOO-(aq) + H3O+(aq) HCOOH(aq) +OH-(aq) D HCOO-(aq) + H2O III. HCOO-(aq) + H2O D HCOOH(aq) + OH-(aq) 2) A basic buffer solution was prepared by mixing solutions of NH3 and NH4Br. At equilibrium, the concentration ratio, [NH4+]/[NH3] was 2.50. Determine the OH- concentration in this buffer solution. NH3 is a base with Kb = 1.75 x 10-5. 3) Calculate the equilibrium constant, Kc, of the reaction: HCO3-(aq) + HCO3-(aq) ↔ H2CO3(aq) + CO32- , Kc = ? Based on your result, do you expect this reaction to occur in the left-to-right direction?
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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Answer the following, include your work and reasoning
1) Put the following three reactions in the order of increasing Kc, (smallest Kc first)
HCOOH has Ka = 1.7 x 10-4.
- HCOOH(aq) +H2O D HCOO-(aq) + H3O+(aq)
- HCOOH(aq) +OH-(aq) D HCOO-(aq) + H2O
- III. HCOO-(aq) + H2O D HCOOH(aq) + OH-(aq)
2) A basic buffer solution was prepared by mixing solutions of NH3 and NH4Br. At equilibrium, the concentration ratio, [NH4+]/[NH3] was 2.50. Determine the OH- concentration in this buffer solution. NH3 is a base with Kb = 1.75 x 10-5.
3)
Calculate the equilibrium constant, Kc, of the reaction:
HCO3-(aq) + HCO3-(aq) ↔ H2CO3(aq) + CO32- , Kc = ?
Based on your result, do you expect this reaction to occur in the left-to-right direction?
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