已知: (1)2Fe(s)+O2(g)=2FeO(s)△H=-544kJ•mol-1 (2)2Al(s)+O2(g)=Al2O3(s)△H=-1675kJ•mol-1 则2Al(s)+3FeO(s)=Al2O3(s)+3Fe(s)的△H为( ) A.-2491kJ•mol-1 B.+859kJ•mol-1 C.-1403kJ•mol-1 D.-859kJ•mol-1 |
答案:D
已知: (1)2Fe(s)+O2(g)=2FeO(s)△H=-544kJ•mol-1 (2)2Al(s)+O2(g)=Al2O3(s)△H=-1675kJ•mol-1 则2Al(s)+3FeO(s)=Al2O3(s)+3Fe(s)的△H为( ) A.-2491kJ•mol-1 B.+859kJ•mol-1 C.-1403kJ•mol-1 D.-859kJ•mol-1 |
答案:D