3. Construct a pe-pH diagram for nitrogen considering the species: NO3¯, NO2‍, NH3, and NH4+ i. ii. NO3 + 10H + 8e¯ ↔ NH4* + 3H₂O NO2 + 8H++ 6e¯ ↔ NH4+ + 2H2O peº = 14.88 peº = 15.08 iii. NO2 + 7H++ 6e¯ ↔ NH3 + 2H2O peº = 13.54 iv. NO3+9H++ 8e ↔ NH3 + 3H2O peº = 13.73 V. NO3 + 2H+ + 2e¯ ↔ NO₂¯ + H₂O peº = 14.28 vi. NH4+ NH3 + H+ pKa = 9.25 a. Derive pe-pH equations for reactions (i) to (viii). For each reaction, assume the concentrations of oxidized and reduced forms of nitrogen are equal to one another. b. Using the equations for part (a), plot the lines on a pe-pH diagram. Label the predominance area for each nitrogen species.

3. Construct a pe-pH diagram for nitrogen considering the species: NO3¯, NO2‍, NH3, and NH4+ i. ii. NO3 + 10H + 8e¯ ↔ NH4* + 3H₂O NO2 + 8H++ 6e¯ ↔ NH4+ + 2H2O peº = 14.88 peº = 15.08 iii. NO2 + 7H++ 6e¯ ↔ NH3 + 2H2O peº = 13.54 iv. NO3+9H++ 8e ↔ NH3 + 3H2O peº = 13.73 V. NO3 + 2H+ + 2e¯ ↔ NO₂¯ + H₂O peº = 14.28 vi. NH4+ NH3 + H+ pKa = 9.25 a. Derive pe-pH equations for reactions (i) to (viii). For each reaction, assume the concentrations of oxidized and reduced forms of nitrogen are equal to one another. b. Using the equations for part (a), plot the lines on a pe-pH diagram. Label the predominance area for each nitrogen species.

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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