0  9571  9579  9585  9589  9595  9597  9601  9607  9609  9615  9621  9625  9627  9631  9637  9639  9645  9649  9651  9655  9657  9661  9663  9665  9666  9667  9669  9670  9671  9673  9675  9679  9681  9685  9687  9691  9697  9699  9705  9709  9711  9715  9721  9727  9729  9735  9739  9741  9747  9751  9757  9765  447090 

30、(24分)(1)                                                   

(2)                                                                           

(3)                                                                         

(4)                           (5)                          

                                                                         

                                                                            

試題詳情

29.(15分)(1)                           、                                ;

(2)                                                                       ;

(3)                   ;

(4)                        ;

(5)                                                                      。

試題詳情

28.(14分)(1)                                                           ;

(2)                                                                               

(3)                                                                                ;

(4)問(wèn)題一:                                                       ;

措施:加熱或                                                      。

問(wèn)題二:試管中的氣體是淡棕紅色,而不是無(wú)色;

措施:                                          (填具體操作。不能增加裝置)。

問(wèn)題三:                                                                 ;

措施:                                                                  

試題詳情

      FeO?Cr2O3(s)+    Na2CO3(s)+    O2     Na2CrO4(s)+    Fe2O3(s)+    CO2;△H < 0

___________(填元素符號(hào))    ___________________________________

(2)______________________

(3)_______________________________________________________(用文字表達(dá))。

(4)______________________、______________________。

(5)______________________

試題詳情

27.(14分)

(1)步驟①中反應(yīng)的化學(xué)方程式為:

試題詳情

26.(15分)

(1)          (填名稱(chēng))    _____________________________。

(2)_____________________________,_____________________________。

(3)_____________________________。

(4)_________________________________________________________。

(5)_________________________________________________________。

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25、(22分)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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24、(18分)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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23、(14分)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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m.dads4merica.com     

 

 

 

 

 

 

 

                  

 

 

 

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