272kJ的精选

问题详情：已知下列数据：Fe（s）+O2（g）═FeO（s）△H=﹣272kJ•mol﹣12Al（s）+O2（g）═Al2O3（s）△H=﹣1675kJ•mol﹣1则2Al（s）+3FeO（s）═Al2O3（s）+3Fe（s）的△H是（）A．+859kJ•mol﹣1B．﹣859kJ•mol﹣1C．﹣1403kJ•mol﹣1D．﹣2491kJ•mol﹣1【回答】B知识点：化学反应中的能量变化题...

问题详情：已知下列数据：Fe(s)＋O2(g)＝FeO(s)    △H＝－272kJ·mol－12Al(s)＋O2(g)＝Al2O3(s)  △H＝－1675kJ·mol－1则2Al(s)+3FeO(s)＝Al2O3(s)+3Fe(s)的△H是A．＋859kJ·mol－1                       B．－859kJ·...

问题详情： 已知：Fe(s)＋O2(g)===FeO(s)ΔH1=－272kJ/mol2Al(s)＋O2(g)===Al2O3(s)ΔH2=－1675kJ/mol则2Al(s)＋3FeO(s)===Al2O3(s)+3Fe(s)的ΔH是（    ）A．＋859kJ/mol             B．－859kJ/mol   C．－1403kJ/mol  ...

问题详情：已知下列数据：Fe(s)+1/2O2(g)＝FeO(s) ΔH＝－272kJ/mol；2Al(s)+3/2O2(g)＝Al2O3(s) ΔH＝－1675kJ/mol；则2Al(s)+3FeO(s)＝Al2O3(s)+3Fe(s)的ΔH是  A.－859kJ/mol    B.+859kJ/mol       C.－1403kJ/mol    ...