Electric generating plants transport large amounts of hot water through metal pipes, and oxygen dissolved in the water can cause a major corrosion problem. Hydrazine (N,H) added to the water avoids the problem by reacting with the oxygen: N,H4(aq) + O2(g) → Nạ(g)+ 2 H,0(1) About 4 x 10' kg of hydrazine is produced every year by reacting ammonia with sodium hypochlorite in the Raschig process: 2 NH3(aq) + NaOCI(aq) N,H4(aq) + NaCl(aq) + H2O(1) AH° = -151 kJ (a) If AH° of NaOC[(aq) =-346 kJ/mol, find AH° of N,H4(aq) given that AH° [NH3(aq)] = -80.83 kJ/mol, AH° [NaOCI(aq)] = -346 kJ/mol, AH° [Na*(aq)] =-239.66 kJ/mol, A#° [CI(aq)] = -167.46 kJ/mol and AH° [H,O()] = -285.840 kJ/mol.

Electric generating plants transport large amounts of hot water through metal pipes, and oxygen dissolved in the water can cause a major corrosion problem. Hydrazine (N,H) added to the water avoids the problem by reacting with the oxygen: N,H4(aq) + O2(g) → Nạ(g)+ 2 H,0(1) About 4 x 10' kg of hydrazine is produced every year by reacting ammonia with sodium hypochlorite in the Raschig process: 2 NH3(aq) + NaOCI(aq) N,H4(aq) + NaCl(aq) + H2O(1) AH° = -151 kJ (a) If AH° of NaOC[(aq) =-346 kJ/mol, find AH° of N,H4(aq) given that AH° [NH3(aq)] = -80.83 kJ/mol, AH° [NaOCI(aq)] = -346 kJ/mol, AH° [Na*(aq)] =-239.66 kJ/mol, A#° [CI(aq)] = -167.46 kJ/mol and AH° [H,O()] = -285.840 kJ/mol.

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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