向硫酸铜溶液中加入过量氨水(1)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3·H2O=[Cu(NH3)4]2+ +2OH-+ 4H2O(2)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3 =[Cu(NH3)4]2+ +2OH-1.问:哪组正确 书上写的是第
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![向硫酸铜溶液中加入过量氨水(1)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3·H2O=[Cu(NH3)4]2+ +2OH-+ 4H2O(2)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3 =[Cu(NH3)4]2+ +2OH-1.问:哪组正确 书上写的是第](/uploads/image/z/2316120-24-0.jpg?t=%E5%90%91%E7%A1%AB%E9%85%B8%E9%93%9C%E6%BA%B6%E6%B6%B2%E4%B8%AD%E5%8A%A0%E5%85%A5%E8%BF%87%E9%87%8F%E6%B0%A8%E6%B0%B4%EF%BC%881%EF%BC%89Cu2%2B%EF%BC%8B2NH3%C2%B7H2O%EF%BC%9DCu%28OH%292%E2%86%93%EF%BC%8B2NH4%2BCu%28OH%292%2B4NH3%C2%B7H2O%3D%EF%BC%BBCu%28NH3%294%EF%BC%BD2%2B+%2B2OH-%2B+4H2O%EF%BC%882%EF%BC%89Cu2%2B%EF%BC%8B2NH3%C2%B7H2O%EF%BC%9DCu%28OH%292%E2%86%93%EF%BC%8B2NH4%2BCu%28OH%292%2B4NH3+%3D%EF%BC%BBCu%28NH3%294%EF%BC%BD2%2B+%2B2OH-1.%E9%97%AE%EF%BC%9A%E5%93%AA%E7%BB%84%E6%AD%A3%E7%A1%AE+%E4%B9%A6%E4%B8%8A%E5%86%99%E7%9A%84%E6%98%AF%E7%AC%AC)
向硫酸铜溶液中加入过量氨水(1)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3·H2O=[Cu(NH3)4]2+ +2OH-+ 4H2O(2)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3 =[Cu(NH3)4]2+ +2OH-1.问:哪组正确 书上写的是第
向硫酸铜溶液中加入过量氨水
(1)
Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+
Cu(OH)2+4NH3·H2O=[Cu(NH3)4]2+ +2OH-+ 4H2O
(2)
Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+
Cu(OH)2+4NH3 =[Cu(NH3)4]2+ +2OH-
1.问:哪组正确 书上写的是第二组,写第一组算正确吗?应该以哪个为准
2.问:生成的[Cu(NH3)4]2+在溶液中是配合物,是[Cu(NH3)4](OH)2还是[Cu(NH3)4]SO4?
向硫酸铜溶液中加入过量氨水(1)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3·H2O=[Cu(NH3)4]2+ +2OH-+ 4H2O(2)Cu2++2NH3·H2O=Cu(OH)2↓+2NH4+Cu(OH)2+4NH3 =[Cu(NH3)4]2+ +2OH-1.问:哪组正确 书上写的是第
都可以,推荐照着书上写.
在溶液中,[Cu(NH3)4]2+、OH-、SO42-共存,说不清究竟是[Cu(NH3)4](OH)2还是[Cu(NH3)4]SO4
就像Na+、K+、Cl-、NO3-在溶液中,你说得清是NaCl、KNO3还是NaNO3、KCl吗?
在氨水中,发生反应的是NH3.H2O,不是NH3,所以第二个正确。
CuSO4+2NH3-H2O=Cu(OH)2+(NH4)2SO4
Cu(OH)2+4NH3-H2O=[Cu(NH3)4](OH)2+4H2O