己知N2O4及NO2的莫耳生成熱(DH)分別為 10.9 KJ/mol及 34.0 kJ/mol，則分解1 mol N2O4生成 NO2的DH 為 (A)57.1 kJ (B)23.1 kJ (C)44.9 kJ (D)－23.1 kJ。
2005-11-30 16:17:09 · 1 個解答 · 發問者 Frank 7 in 科學 ➔ 化學
由題目得知 1/2N2+O2--->NO2.....H=34, N2+2O2---->N2O4....H=10.9
=====>N2+2O2----->2NO2.......H=68
N2O4----->N2+2O2...H=-10.9
+_________________________
N2O4------>2NO2.......H=68-10.9=57.1
2005-11-30 18:43:22 · answer #1 · answered by 念雨 2 · 0⤊ 0⤋