AN2g的精選

問題詳情：N2和H2合成NH3的能量變化如圖所示，該反應的熱化學方程式是( )A.N2(g)＋3H2(g)＝2NH3(g)；△H＝2(b—a)kJ/molB.N2(g)＋3H2(g)＝2NH3(l)；△H＝2(a—b—c)kJ/molC.N2(g)＋H2(g)＝NH3(l)；△H＝(b＋c—a)kJ/molD.N2(g)＋H2(g)＝NH3(g)；△H＝(a＋b)k...

問題詳情：N2和H2合成NH3的能量變化如圖所示，該反應的熱化學方程式是（   ）A.N2(g)＋3H2(g)＝2NH3(l)     △H＝2(a-b-c)kJ/molB.N2(g)＋3H2(g)＝2NH3(g)     △H＝2(b-a)kJ/molC.1/2N2(g)＋3/2H2(g)＝NH3(l) △H＝(b＋c-a)kJ/mol...

問題詳情：現有下列兩個圖象：下列反應中符合上述圖象的是()A.N2(g)＋3H2(g)2NH3(g)ΔH＜0B.2SO3(g)2SO2(g)＋O2(g)ΔH＞0C.4NH3(g)＋5O2(g)4NO(g)＋6H2O(g)ΔH＜0D.H2(g)＋CO(g)C(s)＋H2O(g)ΔH＞0【回答】【*】B【解析】由圖I可知，隨溫度升高...

問題詳情：已達到平衡的可逆反應，增大壓強後，反應速率(v)變化如圖所示。該反應是A.N2(g)＋3H2(g)2NH3(g)    B.C(s)＋H2O(g)CO(g)＋H2(g)C.H2(g)＋I2(g)2HI(g)   D.Fe3＋(aq)＋3SCN－(aq)Fe(SCN)3(aq)【回答】C【解析】【分析】...