4. Calculate AH for the reaction:4 NH3) + 5 Ozg)4 NOe) + 6 H2Og)from the following data.(1) Nzg) + Oze) → 2 NOg)AH = -180.5 kJ mol(2) Nzg) + 3 Hzg)2 NH3) AH= -91.8 kJ mol"(3) 2 H2g) + Ozp) → 2 H2O4 AH=-483.6 kJ mol"!

Answered: Image /qna-images/answer/03a6dfe7-caed-4f78-9718-eb47c8fea0c1.jpg

4. Calculate AH for the reaction: 4 NH3) + 5 Oze) → 4 NOg) + 6 H2Og) from the following data. (1) Nag + Ozig) → 2 NOg) AH = -180.5 kJ mo (2) Nag) + 3 Hz) → 2 NH34) AH=-91.8 kJ mol" (3) 2 H2ig) + Ozg) → 2 H2Og) AH = -483.6 kJ mol"

4. Calculate AH for the reaction: 4 NH3) + 5 Oze) → 4 NOg) + 6 H2Og) from the following data. (1) Nag + Ozig) → 2 NOg) AH = -180.5 kJ mo (2) Nag) + 3 Hz) → 2 NH34) AH=-91.8 kJ mol" (3) 2 H2ig) + Ozg) → 2 H2Og) AH = -483.6 kJ mol"

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy

Section18.7: Calculating And Using Standard Free Energies, Δfg˚

Problem 2RC

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When a neutralization reaction was carried out using 100.0 mL of 0.7890M NH3 water and 100.0 mL of 0.7940M acetic acid, ΔT was found to be 4.76 °C. The specific heat of the reaction mixture was 4.104 J g-l K-1 and its density was 1.03 g mL-1. The calorimeter constant was 3.36 JK-1 a) Calculate ΔH neutralization for the reaction of NH3 and acetic acid. b) At the end of the experiment, it was discovered that the thermometer had not been calibrated. When it was calibrated, it was found that the thermometer read 0.50 °C low. What effect would this thermometer reading have on the reported DH neutralization calculated above? c) When the temperature-time data graph was reviewed, it was found that an error had been made in determining ΔT. Instead of 4.76 °C, ΔT was actually 4.70 °C. Based on this change only, calculate the correct ΔH neutralization for the reaction of NH3, and acetic acid. d) Calculate the percent error for the correct ΔH neutralization if aΔ DT of 4.76 °C had been used.…
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