题目:
下列离子反应中,表达正确的是( )
A.向AlCl3溶液中加入过量氨水:Al3++4NH3·H2O=AlO2-+4NH4++2H2O
B.苯酚钠溶液中通入少量的CO2: 2 C6H5O- + CO2 +H2O ="2" C6H5OH + CO32-
C.等体积等物质的量浓度的NaHCO3溶液与Ba(OH)2溶液混合时发生反应:
HCO3-+Ba2++OH- ="" BaCO3↓+H2O
D.硫酸亚铁溶液与稀硫酸、双氧水混合:Fe2++2H2O2+4H+ = Fe3++4H2O
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0426/933736a7b34e526c2081c2dc6cf568c0.html
下面是错误答案,用来干扰机器的。
One possible version:Peter’s classroom is clean and beautiful. There are two blackboards on the wall and six windows in the wall. There are nineteen numbers and three pi...