已知:(1)Fe2O3(s)+3/2C(s)=3/2CO2(g)+2Fe(s),ΔH=+234.1kJ••mol-1
(2)C(s)+O2(g)=CO2(g);ΔH=-393.5kJ••mol-1
则2Fe(s)+ 3/2O2(g)=Fe2O3(s)的ΔH是( )
A、-824.4 kJ••mol-1 B、-627.6kJ••mol-1 C、-744.7kJ••mol-1 D、-169.4kJ••mol-1
高二化学选择题简单题
已知:Fe2O3 (s)+3/2C(s)= 3/2CO2(g)+2Fe(s) △H=+234.1kJ·mol-1
C(s)+O2(g)=CO2(g) △H=-393.5kJ·mol-1 ,
则 2Fe(s)+3/2O2(g)=Fe2O3(s)的△H是 ( )
A. -824.4kJ·mol- 1 B. -627.6kJ·mol-1
C. -744.7kJ·mol-1 D. -169.4kJ·mol-1
高二化学单选题中等难度题查看答案及解析
已知:Fe2O3(s)+3/2C(s)=3/2CO2(g)+2Fe(s) △H=+234.1 kJ/mol;
C(s)+O2(g)=CO2(g)△H= -393.5 kJ/mol
则2Fe(s)+3/2O2(g)=Fe2O3(s)的△H值是( )
A.-824.4 kJ/mol B.-627.6 kJ/mol
C.-744.7 kJ/mol D.-169.4 kJ/mol
高二化学选择题简单题查看答案及解析
已知:Fe2O3(s)+ 3/2C(s)= 3/2CO2(g)+2Fe(s) △H= +234.1 kJ/mol
C(s)+O2(g)=CO2(g) △H= -393.5 kJ/mol
则反应2Fe(s)+ 3/2O2(g)=Fe2O3(s)的△H是
A.-169.4 kJ/mol B.-627.6 kJ/mol
C.-744.7 kJ/mo D.-824.4 kJ/mol
高二化学选择题中等难度题查看答案及解析
已知:(1)Fe2O3(s)+3/2C(s)=3/2CO2(g)+2Fe(s),ΔH=+234.1kJ••mol-1
(2)C(s)+O2(g)=CO2(g);ΔH=-393.5kJ••mol-1
则2Fe(s)+ 3/2O2(g)=Fe2O3(s)的ΔH是( )
A、-824.4 kJ••mol-1 B、-627.6kJ••mol-1 C、-744.7kJ••mol-1 D、-169.4kJ••mol-1
高二化学选择题简单题查看答案及解析
已知:Fe2O3(s)+C(s)=CO2(g)+2Fe(s)△H=+234.1kJ•mol﹣1
C(s)+O2(g)=CO2(g)△H=﹣393.5kJ•mol﹣1
则2Fe(s)+O2(g)=Fe2O3(s)的△H是( )
A. ﹣824.4kJ•mol﹣ B. ﹣627.6kJ•mol﹣1 C. +744.7kJ•mol﹣1 D. ﹣169.4kJ•mol﹣1
高二化学选择题中等难度题查看答案及解析
已知:Fe2O3(s)+C(s) = CO2(g)+2Fe(s) H =+234.1 kJ·mol-1
C(s)+O2(g) = CO2(g) H =-393.5 kJ·mol-1
则2Fe(s)+O2(g) = Fe2O3(s)的H是 ( )
A.-824.4 kJ·mol-1 B.-627.6 kJ·mol-1
C.-744.7 kJ·mol-1 D.-169.4 kJ·mol
高二化学单选题中等难度题查看答案及解析
已知:Fe2O3 (s)+C(s)= CO2(g)+2Fe(s) △H=234.1kJ·mol-1
C(s)+O2(g)=CO2(g) △H=-393.5kJ·mol-1 ,
则 2Fe(s)+O2(g)=Fe2O3(s)的△H是 ( )
A.-824.4kJ·mol- 1 B.-627.6kJ·mol-1
C.-744.7kJ·mol-1 D.-169.4kJ·mol-1
高二化学选择题简单题查看答案及解析
已知:(1)Fe2O3(s) +C(s)=== CO2(g)+2Fe(s) ΔH=234.1 kJ/mol
(2)C(s)+O2(g)===CO2(g) ΔH=-393.5 kJ/mol
则2Fe(s)+O2(g)===Fe2O3(s) 的ΔH是 ( )
A. -824.4 kJ/mol B. -627.6 kJ/mol C. -744.7 kJ/mol D. -169.4 kJ/mol
高二化学null中等难度题查看答案及解析
已知:Fe2O3(s) +C(s)=CO2(g) +2Fe(s) ΔH1=+234.1 kJ·mol-1,C(s)+ O2(g)=CO2(g) ΔΗ2=-393.5 kJ·mol-1,则2Fe(s) +O2(g) =Fe2O3(s) 的ΔH是
A.-824.4 kJ·mol-1
B.-627.6 kJ·mol-1
C.-744.7 kJ·mol-1
D.-169.4 kJ·mol-1
高二化学选择题中等难度题查看答案及解析
已知Fe2O3(s)+C(s)= CO2(g)+2Fe(s) △H=234.1kJ·mol-1
C(s)+O2(g)=CO2(g) △H=-393.5kJ·mol-1
则2Fe(s)+O2(g)=Fe2O3(s)的△H是( )
A.-824.4kJ·mol-1 B.-627.6kJ·mol-1
C.-744.7kJ·mol-1 D.-169.4kJ·mol-1
高二化学选择题简单题查看答案及解析