問題詳情
20.在25 ℃、1大氣壓下，1克甲醇（CH3OH）燃燒生成CO2和液態水時放熱22.68 kJ，下列熱化學反應式，何者正確？
(A) CH3OH(l)＋O2(g) → CO2(g)＋2H2O(l) ΔH＝＋725.8 kJ
(B) 2CH3OH(l)＋3O2(g) → 2CO2(g)＋4H2O(l) ΔH＝－1452 kJ
(C) 2CH3OH(l)＋3O2(g) → 2CO2(g)＋4H2O(l) ΔH＝－725.8 kJ
(D) 2CH3OH(l)＋3O2(g) → 2CO2(g)＋4H2O(g) ΔH＝＋1452 kJ
(E) 2CH3OH(g)＋3O2(g) → 2CO2(g)＋4H2O(g) ΔH＝－1452 kJ。
(A) CH3OH(l)＋O2(g) → CO2(g)＋2H2O(l) ΔH＝＋725.8 kJ
(B) 2CH3OH(l)＋3O2(g) → 2CO2(g)＋4H2O(l) ΔH＝－1452 kJ
(C) 2CH3OH(l)＋3O2(g) → 2CO2(g)＋4H2O(l) ΔH＝－725.8 kJ
(D) 2CH3OH(l)＋3O2(g) → 2CO2(g)＋4H2O(g) ΔH＝＋1452 kJ
(E) 2CH3OH(g)＋3O2(g) → 2CO2(g)＋4H2O(g) ΔH＝－1452 kJ。
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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