方程式小测(1)
姓名________________ 班别_________________ 学号____________
(没有特殊注明的,写化学方程式;注明“离”的,写离子方程式。)
1.切开的钠表面迅速变暗_______________________________________________________
2.钠加热后,燃烧生成黄色固体___________________________________________________
3.钠块投入CuSO4溶液中_________________________________________________________
4.工业冶炼钠__________________________________________________________________
5.氯碱工业制备烧碱___________________________________________________________
6.Na2O2加入水中_____________________________________________________________
7.Na2O2用于制作防毒面具的原理________________________________________________
8.侯氏制碱法的反应原理________________________________________________________
_____________________________________________________________________________
9.向饱和的Na2CO3溶液中通入CO2,有晶体析出___________________________________
10.向纯碱溶液中逐滴滴加盐酸,开始没有气泡,后来产生气泡(离)
______________________________________________________________________________
11.向盐酸中逐滴滴加苏打溶液,立即产生气泡(离)__________________________________
12.向小苏打溶液中逐滴滴加盐酸,立即产生气泡(离)_______________________________
13.向NaHCO3溶液中滴加少量的Ca(OH)2溶液(离)_________________________________
14.向Ca(OH)2溶液中滴加少量的NaHCO3溶液(离)_________________________________
方程式小测(2)
姓名________________ 班别_________________ 学号____________
1.已知铝土矿的主要成分是Al2O3,含少量的Fe2O3、SiO2杂质。写出以下流程的指定方程式。(没有特殊注明的,写化学方程式;注明“离”的,写离子方程式。)
①_____________________________________;______________________________________
②(离)_________________________________③(离)_________________________________
④______________________________________⑤___________________________________