(百色专版)2019届中考化学毕业总复习第2编重点专题突破篇专项训练5化学方程式检测.doc

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1、1专项训练五 化学方程式有氧气参与的反应1.氧气与非金属单质反应(1)碳在氧气中燃烧(氧气不足)_2CO 2 2CO_= = = = =点 燃 (2)白磷燃烧现象:产生大量的白烟_4P5O 2 2P2O5_= = = = =点 燃 (3)硫与氧气反应_SO 2 SO2_= = = = =点 燃 (4)氢气与氧气反应_2H2O 2 2H2O_= = = = =点 燃 (5)碳在氧气中燃烧(氧气足量)_CO 2 CO2_= = = = =点 燃 2.氧气与金属单质反应(1)铁与氧气反应_3Fe2O 2 Fe3O4_= = = = =点 燃 (2)铝与氧气反应_4Al3O 2 2Al2O3_= =

2、 = =点 燃 (3)镁与氧气反应_2MgO 2 2MgO_= = = = =点 燃 (4)铜与氧气反应_2CuO 2 2CuO_= = = = = 3.氧气与化合物反应(1)甲烷燃烧现象:发出明亮的蓝色火焰,烧杯内壁有水雾生成,澄清石灰水变浑浊_CH42O 2 CO22H 2O_= = = = =点 燃 (2)酒精燃烧2_C2H5OH3O 2 2CO23H 2O_= = = = =点 燃 (3)一氧化碳燃烧_2COO 2 2CO2_= = = = =点 燃 实验室制取气体1.制取氧气(1)过氧化氢分解_2H2O2 2H2OO 2_= = = = =MnO2 (2)氯酸钾与二氧化锰共热_2K

3、ClO3 2KCl3O 2_= = = = =MnO2 (3)高锰酸钾受热分解_2KMnO4 K2MnO4MnO 2O 2_= = = = = 2.制取二氧化碳碳酸钙与稀盐酸反应制二氧化碳_CaCO32HCl= =CaCl2H 2OCO 2_有二氧化碳参与的反应1.二氧化碳与氢氧化钠反应_CO22NaOH= =Na2CO3H 2O_2.二氧化碳与碳反应_CO2C 2CO_= = = = =高 温 3.二氧化碳与水反应_CO2H 2O=H2CO3_金属氧化物与酸反应1.用稀盐酸除铁锈_Fe2O36HCl= =2FeCl33H 2O_2.氧化铜与稀硫酸反应_CuOH 2SO4=CuSO4H 2O_

4、3.氧化铁与稀硫酸反应_Fe2O33H 2SO4=Fe2(SO4)33H 2O_金属与酸、盐的反应1.金属与酸的反应(1)铁与稀硫酸反应_FeH 2SO4=FeSO4H 2_(2)铁与稀盐酸反应现象:有气泡产生,溶液由无色变为浅绿色3_Fe2HCl= =FeCl2H 2_(3)镁与稀盐酸反应_Mg2HCl= =MgCl2H 2_(4)锌与稀盐酸反应_Zn2HCl= =ZnCl2H 2_(5)锌与稀硫酸反应_ZnH 2SO4=ZnSO4H 2_(6)镁与稀硫酸反应_MgH 2SO4=MgSO4H 2_(7)铝与稀硫酸反应_2Al3H 2SO4=Al2(SO4)33H 2_2.金属与盐的反应(1)

5、铁与硫酸铜反应现象:铁丝表面覆盖一层红色的物质,溶液由蓝色变成浅绿色_FeCuSO 4=FeSO4Cu_(2)铝与硫酸铜反应_2Al3CuSO 4=Al2(SO4)33Cu_(3)铜与硝酸银反应_Cu2AgNO 3=Cu(NO3)22Ag_(4)铁与氯化铜反应_FeCuCl 2=FeCl2Cu_(5)铝与硝酸银反应_Al3AgNO 3=Al(NO3)33Ag_(6)锌与硫酸铜反应_ZnCuSO 4=ZnSO4Cu_金属冶炼1.铁的冶炼(1)一氧化碳还原氧化铁现象:红色粉末变成黑色,澄清石灰水变浑浊_Fe2O33CO 2Fe3CO 2_= = = = =高 温 (2)一氧化碳还原四氧化三铁_Fe

6、3O44CO 3Fe4CO 2_= = = = =高 温 (3)氢气还原氧化铁_3H2Fe 2O3 2Fe3H 2O_= = = = =高 温 (4)焦炭还原氧化铁_2Fe2O33C 3CO24Fe_= = = = =高 温 42.铜的冶炼(1)一氧化碳还原氧化铜_CuOCO CuCO 2_= = = = =高 温 (2)碳还原氧化铜_2CuOC 2CuCO 2_= = = = =高 温 (3)氢气还原氧化铜_CuOH 2 CuH 2O_= = = = = 钙的化合物参与的反应1.二氧化碳通入澄清石灰水现象:澄清石灰水变浑浊_CO2Ca(OH) 2=CaCO3H 2O_2.氢氧化钙与碳酸钠反应

7、现象:有白色沉淀生成_Ca(OH)2Na 2CO3=CaCO32NaOH_3.氧化钙与水反应_CaOH 2O=Ca(OH)2_4.氯化钙与碳酸钠反应现象:有白色沉淀生成_CaCl2Na 2CO3=CaCO32NaCl_5.碳酸钙分解_CaCO3 CaOCO 2_= = = = =高 温 6.氢氧化钙与硫酸反应_Ca(OH)2H 2SO4=CaSO42H 2O_7.氢氧化钙与盐酸反应_Ca(OH)22HCl= =CaCl22H 2O_8.碳酸氢钙分解_Ca(HCO3)2=CaCO3CO 2H 2O_9.碳酸钙与二氧化碳、水反应_CaCO3CO 2H 2O=Ca(HCO3)2_酸、碱、盐之间的反应

8、1.碱与酸的反应(1)氢氧化钠与稀盐酸反应_NaOHHCl= =NaClH 2O_(2)氢氧化钠与稀硫酸反应_2NaOHH 2SO4=Na2SO42H 2O_5(3)氢氧化镁与稀盐酸反应_Mg(OH)22HCl= =MgCl22H 2O_(4)氢氧化铝与稀盐酸反应_Al(OH)33HCl= =AlCl33H 2O_(5)氢氧化钾与稀盐酸反应_KOHHCl= =KClH 2O_2.盐与酸的反应(1)碳酸钠与稀盐酸反应现象:有气泡生成_Na2CO32HCl= =2NaClH 2OCO 2(2)碳酸镁与稀盐酸反应_MgCO32HCl= =MgCl2H 2OCO 2(3)碳酸钾与稀盐酸反应_K2CO32HCl= =2KClH 2OCO 2_(4)碳酸氢钠与稀盐酸反应_NaHCO3HCl= =NaClH 2OCO 23.碱与盐的反应氢氧化钠与硫酸铜反应_2NaOHCuSO 4=Cu(OH)2Na 2SO4_4.盐与盐的反应(1)氯化钠与硝酸银的反应现象:有白色沉淀生成,沉淀不溶于稀硝酸_NaClAgNO 3=AgClNaNO 3_(2)硫酸铜与氯化钡反应_CuSO4BaCl 2=CuCl2BaSO 4_其他1.电解水实验原理_2H2O 2H2O 2_= = = = =通 电 2.碳酸分解_H2CO3=H2OCO 2_3.氢氧化钠与三氧化硫反应_2NaOHSO 3=Na2SO4H 2O_

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