已知下列数据:
Fe(s)+O2(g) =FeO(s) △H=-272kJ·mol-1
2Al (s)+O2(g) =Al2O3(s) △H=-1675kJ·mol-1
则2Al(s) +3FeO(s) =Al2O3(s) + 3Fe(s)的△H是( )
A.+859 kJ·mol-1 B.-859 kJ·mol-1
C.-1403 kJ·mol-1 D.-2491 kJ·mol-1
高二化学选择题简单题
已知下列数据:
Fe(s)+O2(g)=FeO(s) △H=-272kJ·mol-1
2Al(s)+O2(g)=Al2O3(s) △H=-1675kJ·mol-1
则2Al(s) +3FeO(s)=Al2O3(s) + 3Fe(s)的△H是
A.+859 kJ·mol-1 B.-859 kJ·mol-1
C.-1403 kJ·mol-1 D.-2491 kJ·mol-1
高二化学选择题中等难度题查看答案及解析
已知下列数据:
Fe(s)+O2(g) =FeO(s) △H=-272kJ·mol-1
2Al (s)+O2(g) =Al2O3(s) △H=-1675kJ·mol-1
则2Al(s) +3FeO(s) =Al2O3(s) + 3Fe(s)的△H是( )
A.+859 kJ·mol-1 B.-859 kJ·mol-1
C.-1403 kJ·mol-1 D.-2491 kJ·mol-1
高二化学选择题简单题查看答案及解析
高二化学解答题中等难度题查看答案及解析
已知:下列两个热化学方程式:
Fe(s)+O2(g)═FeO(s) △H=﹣272.0KJ/mol
2Al(s)+O2(g)═Al2O3(s) △H=﹣1675.7KJ/mol
则 Al(s)的单质和FeO(s)反应的热化学方程式是 .
高二化学填空题简单题查看答案及解析
已知:Fe(s)+O2(g)═FeO(s)△H1=-272kJ/mol,2Al(s)+O2(g)═Al2O3(s)△H2=-1 675kJ/mol,则2Al(s)+3FeO(s)═Al2O3(s)+3Fe(s)的△H是( )
A.-859 kJ/mol B.859 kJ/mol
C.-1403 kJ/mol D.-2491 kJ/mol
高二化学选择题中等难度题查看答案及解析
已知:Fe(s)+O2(g) = FeO(s) ΔH1=-272kJ/mol
2Al(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 D. -2491kJ/mol
高二化学选择题简单题查看答案及解析
已知:Fe(s)+O2(g)===FeO(s) ΔH1=-272 kJ/mol
2Al(s)+O2(g)===Al2O3(s) ΔH2=-1 675 kJ/mol
则2Al(s)+3FeO(s)===Al2O3(s)+3Fe(s)的ΔH是
A.859 kJ/mol B.-859 kJ/mol
C.-1403 kJ/mol D.-2491 kJ/mol
高二化学选择题中等难度题查看答案及解析
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.-859 kJ/mol B.+859 kJ/mol C.-1403 kJ/mol D.-2491 kJ/mol
高二化学选择题中等难度题查看答案及解析
已知下列数据:4Al(s)+3O2(g)=2Al2O3(s) △H=-3350kJ·mol-1
2Fe(s)+O2(g)=2FeO(s) △H=-544kJ·mol-1
则2Al(s) +3FeO(s)=Al2O3(s) + 3Fe(s)的△H是( )
A. +1403 kJ·mol-1 B. -859 kJ·mol-1
C. -1718 kJ·mol-1 D. -2806kJ·mol-1
高二化学单选题中等难度题查看答案及解析
已知下列数据:
4Al(s)+3O2(g)=2Al2O3(s) △H=-3350kJ·mol-1
2Fe(s)+O2(g)=2FeO(s) △H=-544kJ·mol-1
则2Al(s) +3FeO(s)=Al2O3(s) + 3Fe(s)的△H是( )
A.-859 kJ·mol-1 B.+1403 kJ·mol-1 C.-1718 kJ·mol-1 D.-2806kJ·mol-1
高二化学选择题中等难度题查看答案及解析