关于H2F2g的百科

• 已知*化*气体中有平衡关系：①2H3F3(g)===3H2F2(g)　ΔH1＝akJ·mol－1②H2F2(g...

• 问题详情：已知*化*气体中有平衡关系：①2H3F3(g)===3H2F2(g)ΔH1＝akJ·mol－1②H2F2(g)===2HF(g)ΔH2＝bkJ·mol－1已知a、b均大于0，则可推测反应：H3F3(g)===3HF(g)的ΔH3＝()A．(a＋b)kJ·mol－1            B．(a－b)kJ·mol－1C．(a＋3b)kJ·mol－1           D．(0.5a＋1.5b)kJ·m...
• 2021-05-1614055