Calculate delta H for the reaction.
NO (g) + O (g) → NO2 (g)
given the following information:
NO (g) + O3 (g) → NO2 (g) + O2 (g) delta H = -198.9kJ
O3(g) → (3/2) O2 (g) delta H = -142kJ
O2(g) → 2O (g) delta H = 495.0kJ
ans: -304.1kJ
Calculate delta H
2013-05-16 2:12 am
回答 (1)
2013-05-16 8:44 am
✔ 最佳答案
NO(g) + O3(g) → NO2(g) + O2(g) .. ΔH = -198.9 kJ(3/2)O2(g) → O3(g) .. ΔH = -(-142) = +142 kJ
O(g) → (1/2)O2(g) .. ΔH = -(1/2)(495.0) =-247.5 kJ
Add the above 3 thermochemical equations together, and cancel O3(g)and (3/2)O2(g) on the both sides.
NO(g) + O(g) → NO2(g)
ΔH = (-198.9) + (+142) + (-247.5) = -304.4 kJ
參考: micatkie
收錄日期: 2021-04-13 19:28:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130515000051KK00172