2026年中考化学复习--默写第57-58天物质的分离 提纯 除杂2

睡前默写 初中化学  No.29

 

                                混合物的分离、提纯、除杂3

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3.气体除杂(括号内物质是杂质)

(1)O2、CO(CO2)：通过____________、_________，化学方程式：___________________________

(2)CO2(CO)：通过_________________，化学方程式：__________________________

(3)CO2(HCl)：通过_____________、_________，化学方程式：___________________________________

(4)H2、O2(HCl)：通过_____________、_________，化学方程式：________________________________

(5)N2(O2)：通过_____________、_________，化学方程式：___________________________________

(6)H2、O2、CO2(NH3)：通过___________，化学方程式：_______________________________________

  4.溶液除杂(括号内物质是杂质)

   A.加入除杂试剂是液体时要适量(写出除杂方法和反应的化学方程式)

 (1)NaOH溶液(Na2CO3)：______________________________、__________________________________

   (2)NaCl溶液(Na2CO3)：______________________________、___________________________________

   (3)NaCl溶液(NaOH)：______________________________、____________________________________

   (4)NaCl溶液(Na2SO4)：______________________________、___________________________________

   (5)NaCl溶液(CuSO4)：______________________________、____________________________________

   (6)NaNO3溶液(NaCl)：______________________________、____________________________________

   (7)NaOH溶液(Na2SO4)：______________________________、___________________________________

 

 

 

 

                             混合物的分离、提纯、除杂4           

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  B.加入除杂试剂是固体且不溶于水时可以过量(写出除杂方法和反应的化学方程式)

  (1)CaCl2溶液(HCl)：______________________________、___________________________________

  (2)FeSO4溶液(CuSO4)：______________________________、___________________________________

  (3)CuSO4溶液(H2SO4)：______________________________、___________________________________

  (4)FeCl2溶液(HCl)：______________________________、___________________________________

  (5)FeCl3溶液(HCl)：______________________________、___________________________________

  5.固体除杂(括号内物质是杂质)

  (1)CaO(CaCO3)：________________、___________________________________

  (2)CuO[Cu2(OH)2 CO3]：______________________________、___________________________________

  (3)KCl(KClO3)：______________________________、___________________________________

  (4)NaCl(NH4HCO3)：______________________________、___________________________________

  (5)CuO(Cu)：____________________、______________________________

  (6)Cu(CuO)：____________________________________、___________________________________

  (7)Cu(Fe)：______________________________________、___________________________________

  (8)CaCO3(CaO)：_________________________________、_______________________________