题目内容
在H2SO4溶液中分别滴加(或加入)少量的下列溶液(或物质): ①CH3COONa溶液 ②氨水
③Cu(OH)2④Zn粒 ⑤Fe2O3粉末。写出反应的现象和有关的离子方程式。
①_______________________,_________________________ ______________________
②____________________,_________________________________________________
③_______________________,___________________________________________________
④_______________________,________________________________________________
⑤_______________________,____________________________________________
③Cu(OH)2④Zn粒 ⑤Fe2O3粉末。写出反应的现象和有关的离子方程式。
①_______________________,_________________________ ______________________
②____________________,_________________________________________________
③_______________________,___________________________________________________
④_______________________,________________________________________________
⑤_______________________,____________________________________________
①无现象;CH3COO-+H+=CH3COOH
②无现象;NH3 · H2O+H+=NH4++H2O
③蓝色固体溶解为蓝色溶液;Cu(OH)2+2H+=Cu2++2H2O
④溶解产生气体(气泡);Zn+2H+=Zn2++H2↑
⑤Fe2O3溶解;Fe2O3+6H+="2" Fe3++3H2O
②无现象;NH3 · H2O+H+=NH4++H2O
③蓝色固体溶解为蓝色溶液;Cu(OH)2+2H+=Cu2++2H2O
④溶解产生气体(气泡);Zn+2H+=Zn2++H2↑
⑤Fe2O3溶解;Fe2O3+6H+="2" Fe3++3H2O
略
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