北京化工大学：《无机化学》课程电子教案（课件讲稿，2015）Chapter 19 The elements of copper and zinc family

Chapter 19 The elements of copper and zinc family X$19.1 The elements of copper family X 19.2 The elements of zinc family

Chapter 19 The elements of copper and zinc family §19.1 The elements of copper family §19.2 The elements of zinc family

19.1 The elements of copper family >19.1.1 The elemental substances of copper family 319.1.2 The compounds of copper -19.1.3 The copper ions in aqueous solution and the related reactions

§19.1 The elements of copper family 19.1.1 The elemental substances of copper family 19.1.2 The compounds of copper 19.1.3 The copper ions in aqueous solution and the related reactions

19.1.1 The elemental substances of copper family 1.Existence Elemental substance:Cu,Ag,Au Mineral:malachite:Cu2(OH)2CO3(孔雀石) argentite:AgzS(辉银矿) calaverite:AuTe2(碲金矿) 2.Physical properties .Color:Cu(violet red),Ag(white),Au(yellow) .m.p and b.p are lower than that of other transition metals .Good conductor of heat and electricity,the order is Ag>Cu>Au .Good ductibility

19.1.1 The elemental substances of copper family Elemental substance：Cu, Ag, Au Mineral: malachite：Cu2 (OH)2CO3 (孔雀石) argentite：Ag2S (辉银矿） calaverite：AuTe2 (碲金矿) 1.Existence 2.Physical properties •Color：Cu(violet red), Ag(white), Au(yellow) •m.p and b.p are lower than that of other transition metals •Good conductor of heat and electricity, the order is Ag>Cu>Au •Good ductibility

3.Chemical properties ·reacts with oxygen 2Cu+02A→2Cu0(黑) 2Cu+02+H20+C02△→ Cu2(OH)2C0,(绿) 碱式碳酸铜 Au and Ag can't react with oxygen,but the reaction can occur in the presence of precipitating agent or coordinating ligand

3.Chemical properties • reacts with oxygen 2Cu O 2CuO( )  2   黑 碱式碳酸铜 Au and Ag can’t react with oxygen，but the reaction can occur in the presence of precipitating agent or coordinating ligand Cu (OH) CO ( ) 2Cu O H O CO 2 2 3 2 2 2 绿     

M=Cu,Ag,Au 4M+,+2H,O+8CN>4[M(CN)+40H 4Cu+0,+2H,O+8NH3> 4[CuNH3)2](无色)+4OH 02 [CuNH,)4]2+(蓝) Aqueous ammonia can't be shipped in copper containers. 2Ag+2H2S+02->2Ag2S+2H2O 银器年久变黑

M  C u, Ag, A u [Cu(N H ) ] ( ) 2 3 4  蓝 Aqueous ammonia can’t be shipped in copper containers. 2Ag  2 H 2 S  O 2  2Ag 2 S  2 H 2 O O2 银器年久变黑.        4[Cu(NH ) ] ( ) 4OH 4Cu O 2H O 8NH 3 2 2 2 3 无色    4MO2  2H2 O8CN 4[M(CN)2 ]  4OH