9.已知:C(s)+O2(g) = CO2(g),△H=-393.5 kJ/mol H2(g)+ O2 (g)=H2O(g),△H=-241.5 kJ/mol 欲得相同热量.需充分燃烧 C和 H2的质量比约为 ( ) A.12:3.25 B.3.25:12 C.1:1 D.6:1 查看更多

 

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已知:C(s)+O2(g) CO(g);ΔH=-110.5 kJ·mol-1?①

C(s)+O2(g)CO2(g);ΔH=-393.51 kJ·mol-1

计算下列反应的反应热ΔH:C(s)+CO2(g) 2CO(g)(  )?

A.-283.01 kJ·mol?              B.172.51 kJ·mol-1??

C.283.1 kJ·mol-1??           D.504.00 kJ·mol-1??

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已知:①C(s) +O2(g)      CO(g);△H =" –" 110.5 kJ · mol – 1
②C(s) + O2(g)      CO2(g);△H =" –" 393.51 kJ · mol – 1
则反应:C(s) + CO2(g)      2CO(g)的△H为             (      )

A.– 283.01 kJ · mol – 1B.+ 172.51 kJ · mol – 1
C.+ 283.01 kJ · mol – 1D.+ 504.00 kJ · mol – 1

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已知:①C(s) +O2(g)      CO(g);△H =" –" 110.5 kJ · mol – 1

②C(s) + O2(g)      CO2(g);△H =" –" 393.51 kJ · mol – 1

则反应:C(s) + CO2(g)      2CO(g)的△H为             (      )

A.– 283.01 kJ · mol 1                B.+ 172.51 kJ · mol 1

C.+ 283.01 kJ · mol 1                 D.+ 504.00 kJ · mol 1

 

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已知:①C(s) +O2(g)      CO(g);△H = – 110.5 kJ · mol – 1

②C(s) + O2(g)      CO2(g);△H = – 393.51 kJ · mol – 1

则反应:C(s) + CO2(g)      2CO(g)的△H为                      (    )

A.– 283.01 kJ · mol – 1    B.+ 172.51 kJ · mol – 1

C.+ 283.01 kJ · mol – 1    D.+ 504.00 kJ · mol – 1

 

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已知:①C(s) +O2(g)      CO(g);△H =" –" 110.5 kJ · mol – 1
②C(s) + O2(g)     CO2(g);△H =" –" 393.51 kJ · mol – 1
则反应:C(s) + CO2(g)     2CO(g)的△H为 (   )
A.– 283.01 kJ · mol – 1B.+ 172.51 kJ · mol – 1
C.+ 283.01 kJ · mol – 1D.+ 504.00 kJ · mol – 1

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