The formation of NO from N 2 and O 2 is unfavorable at 298 K, but it
Question:
The formation of NO from N2 and O2 is unfavorable at 298 K, but it becomes increasingly favored at high temperatures such as those in an automobile cylinder. Using data (ΔfH°, S° and ΔfG°) in Appendix L, calculate the equilibrium constant for the reaction ½ N2(g) + ½ O2(g) → NO(g) at 298 K and at 1000 K.
Data given in Appendix L
Transcribed Image Text:
TABLE 20 Species Mercury Hg() HgClz(s) HgO(s, red) HgS(s, red) Nickel Ni(s) NiO(s) NICIz(s) Nitrogen N₂(g) N(g) NH,(g) N₂H₂(e) NH₂Cl(s) NH₂Cl(aq) NH₂NO, (s) NH4NO₂(aq) NO(g) NO₂(g) N₂O(g) N₂O₂(g) NOCI(g) HNO3(e) HNO₂(g) HNO₂(aq) Oxygen 0₂(g) O(g) O₂(g) Selected Thermodynamic A+Hº (298.15 K) (kJ/mol) 0 -224.3 -90.83 -58.2 0 -239.7 -305.332 0 472.704 -45.90 50.63 -314.55 -299.66 -365.56 -339.87 90.29 33.1 82.05 9.08 51.71 -174.10 -135.06 -207.36 0 249.170 142.67 Values (continued) Sº (298.15 K) (J/K-mol) 76.02 146.0 70.29 82.4 29.87 37.99 97.65 191.56 153.298 192.77 121.52 94.85 169.9 151.08 259.8 210.76 240.04 219.85 304.38 261.8 155.60 266.38 146.4 205.07 161.055 238.92 A+Gº (298.15 K) (kJ/mol) 0 -178.6. -58.539 -50.6 0 -211.7 -259.032 0 455.563 -16.37 149.45 -203.08 -210.57 -183.84 -190.57 86.58 51.23 104.20 97.73 66.08 -80.71 -74.72 -111.25 0 231.731 163.2
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Related Book For
Chemistry And Chemical Reactivity
ISBN: 9780357001172
10th Edition
Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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