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: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter3: Chemical Reactions
Section: Chapter Questions
Problem 156QRT: Ethanol, C2H5OH, is a gasoline additive that can be produced by fermentation of glucose....
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![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F308eae66-d199-4fc3-8302-5ae0a807c2a0%2Fd510693e-1981-4cfb-b30e-647a88141c34%2Fhuzpi2.png&w=3840&q=75)
Transcribed Image Text: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.
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