问题 填空题

(8分)把下列离子方程式改写成化学方程式

(1)CO+2HCO2↑+H2O                                   

(2)Ag+ClAgCl↓                                          

(3)Cu2+2OHCu(OH)2↓                                  

(4)Ba2+十SO42BaSO4↓                                      

答案

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