Fe2O3+3CO2(g) △H= ?24.8kJ/mol 查看更多

 

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(7分)(1)已知:H—H鍵能為436kJ/mol,N≡N鍵能為945kJ/mol,N—H鍵能為391kJ/mol。根據(jù)鍵能計(jì)算工業(yè)合成氨的反應(yīng)是___________ 反應(yīng)(填“吸熱”或“放熱”),消耗1mol N2合成氨反應(yīng)的=______________。                                                                                                                                                                                                                                                                                                        
(2) 現(xiàn)根據(jù)下列3個(gè)熱化學(xué)反應(yīng)方程式:
①Fe2O3(s)+3CO(g) =2Fe(s)+3CO2(g)        △H=―24.8kJ/mol
②3Fe2O3(s)+ CO(g) =2Fe3O4(s)+ CO2(g)      △H=―47.2kJ/mol
③Fe3O4(s)+CO(g) =3FeO(s)+CO2(g)         △H=+640.5kJ/mol
則CO氣體還原FeO固體得到Fe固體和CO2氣體的熱化學(xué)反應(yīng)方程式為        。

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(7分)(1)已知:H—H鍵能為436kJ/mol,N≡N鍵能為945kJ/mol,N—H鍵能為391kJ/mol。根據(jù)鍵能計(jì)算工業(yè)合成氨的反應(yīng)是___________ 反應(yīng)(填“吸熱”或“放熱”),消耗1mol N2合成氨反應(yīng)的=______________。                                                                                                                                                                                                                                                                                                         

(2) 現(xiàn)根據(jù)下列3個(gè)熱化學(xué)反應(yīng)方程式:

①Fe2O3(s)+3CO(g) =2Fe(s)+3CO2(g)        △H=―24.8kJ/mol

②3Fe2O3(s)+ CO(g) =2Fe3O4(s)+ CO2(g)      △H=―47.2kJ/mol

③Fe3O4(s)+CO(g) =3FeO(s)+CO2(g)         △H=+640.5kJ/mol

則CO氣體還原FeO固體得到Fe固體和CO2氣體的熱化學(xué)反應(yīng)方程式為         。

 

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(7分)(1)已知:H—H鍵能為436kJ/mol,N≡N鍵能為945kJ/mol,N—H鍵能為391kJ/mol。根據(jù)鍵能計(jì)算工業(yè)合成氨的反應(yīng)是___________ 反應(yīng)(填“吸熱”或“放熱”),消耗1mol N2合成氨反應(yīng)的=______________。                                                                                                                                                                                                                                                                                                        
(2) 現(xiàn)根據(jù)下列3個(gè)熱化學(xué)反應(yīng)方程式:
①Fe2O3(s)+3CO(g) =2Fe(s)+3CO2(g)        △H=―24.8kJ/mol
②3Fe2O3(s)+ CO(g) =2Fe3O4(s)+ CO2(g)      △H=―47.2kJ/mol
③Fe3O4(s)+CO(g) =3FeO(s)+CO2(g)         △H=+640.5kJ/mol
則CO氣體還原FeO固體得到Fe固體和CO2氣體的熱化學(xué)反應(yīng)方程式為        。

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蓋斯定律在生產(chǎn)和科學(xué)研究中有很重要的意義。有些反應(yīng)的反應(yīng)熱雖然無(wú)法直接測(cè)得,但可通過(guò)間接的方法測(cè)定。現(xiàn)根據(jù)下列3個(gè)熱化學(xué)反應(yīng)方程式:

   Fe2O3(s)+3CO(g)==2Fe(s)+3CO2(g)        △H= ―24.8kJ/mol

   3Fe2O3(s)+CO(g)==2Fe3O4(s)+ CO2(g)     △H= ―47.2kJ/mol

Fe3O4(s)+CO(g)==3FeO(s)+CO2(g)        △H= +640.5kJ/mol

寫(xiě)出CO氣體還原FeO固體得到Fe固體和CO2氣體的熱化學(xué)反應(yīng)方程式:

_________________                                         

 

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(4分)蓋斯定律在生產(chǎn)和科學(xué)研究中有很重要的意義。有些反應(yīng)的反應(yīng)熱雖然無(wú)法直接測(cè)得,但可通過(guò)間接的方法測(cè)定,F(xiàn)根據(jù)下列3個(gè)熱化學(xué)反應(yīng)方程式:

Fe2O3(s)+3CO(g)= 2Fe(s)+3CO2(g)        △H= ―24.8kJ/mol

3Fe2O3(s)+ CO(g)=2Fe3O4(s)+ CO2(g)      △H= ―47.2kJ/mol

Fe3O4(s)+CO(g)=3FeO(s)+CO2(g)         △H= +640.5kJ/mol

寫(xiě)出CO氣體還原FeO固體得到Fe固體和CO2氣體的熱化學(xué)反應(yīng)方程式:

________________                                                           

 

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