272kJmol的精选

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    ...