2) What is the equilibrium equation for the following reaction? 2) FeS(s) + 2 H3O* (aq) = Fe2*(aq) + H2S (aq) + 2 H2O (g) [Fe2+] [H2S] A) Kc = [FeS] [H3O+]2 [Fe2+] [H2S] C) Kc = [Fe2+] [H2S] [H¿O]² B) Kc = [FeS] [H3O+? [Fe2+] [H2S] [H;O]? D) Kc = [H3O*]2 [H3O*j2

2) What is the equilibrium equation for the following reaction? 2) FeS(s) + 2 H3O* (aq) = Fe2(aq) + H2S (aq) + 2 H2O (g) [Fe2+] [H2S] A) Kc = [FeS] [H3O+]2 [Fe2+] [H2S] C) Kc = [Fe2+] [H2S] [H¿O]² B) Kc = [FeS] [H3O+? [Fe2+] [H2S] [H;O]? D) Kc = [H3O]2 [H3O*j2

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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Question

2) What is the equilibrium equation for the following reaction?
2)
FeS(s) + 2 H3O* (aq) = Fe2*(aq) + H2S (aq) + 2 H2O (g)
[Fe2+] [H2S]
A) Kc =
[FeS] [H3O+]2
[Fe2+] [H2S]
C) Kc =
[Fe2+] [H2S] [H¿O]²
B) Kc =
[FeS] [H3O+?
[Fe2+] [H2S] [H;O]?
D) Kc =
[H3O*]2
[H3O*j2

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(buffer )Find a buffer to maintain a laboratory system for coagulation at a pH of 5.5. The system uses a ferric chloride coagulant and generates acidity as defined by the reaction in equation (1). If the coagulant dose is 10 mg/L Fe+3 calculate the concentration of the buffer to maintain the pH at a level within 0.2 pH units. FeCl3 + 3 H2O ↔ Fe(OH)3 (s) + 3H+ + 3Cl-
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