2Fes的精选

问题详情：已知：2Fe(s)＋O2(g)＝2FeO(s)△H＝－544kJ·mol－14Al(s)＋3O2(g)＝2Al2O3(s)△H＝－3350kJ·mol－1则2Al(s)+3FeO(s)＝Al2O3(s)+3Fe(s)的△H是（   ）A.－859kJ·mol－1                          B.＋859kJ·mo...

问题详情：金属铜的提炼多从黄铜矿开始，黄铜矿的熔烧过程主要反应之一为：2CuFeS2+O2=         +2FeS+SO2，则下列说法正确的是              （    ）A．CuFeS2仅作还原剂B．横线上的物质应是CuSC．若有1m...

问题详情： 已知：2Fe(s)＋O2(g)＝2FeO(s)△H＝－544kJ·mol－14Al(s)＋3O2(g)＝2Al2O3(s)△H＝－3350kJ·mol－1则2Al(s)+3FeO(s)＝Al2O3(s)+3Fe(s)的△H是A.－859kJ·mol－1B.＋859kJ·mol－1C.－1403kJ·mol－1 D.－2491kJ·mol－1【回答】A【解析】根据盖...

问题详情：Fe2O3(s)＋C(s)===CO2(g)＋2Fe(s)  ΔH＝＋234.1kJ/molC(s)＋O2(g)===CO2(g)ΔH＝－393.5kJ/mol则2Fe(s)＋O2(g)===Fe2O3(s)的ΔH等于()A．－824.4kJ/mol             B．－627.6kJ/molC．－744.7kJ/mol         ...