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