下列离子方程式书写正确的是
①向明矾溶液中加入过量的氢氧化钡溶液：Al3++2SO42－+2Ba2++4OH－=AlO2－+2BaSO4↓+2H2O
②向氢氧化亚铁中加入足量的稀硝酸：Fe（OH）2+2H+=Fe2++2H2O
③向磷酸二氢铵溶液中加入足量的氢氧化钠溶液：NH4++OH－=NH3•H2O
④向CH2BrCOOH中加入足量的氢氧化钠溶液并加热：
CH2BrCOOH+OH－ CH2BrCOO－+H2O
⑤向含0．5mol溴化亚铁溶液中通入0．5mol氯气2Fe2++Cl2=2Fe3++2Cl-
⑥澄清石灰水中滴加少量碳酸氢钙溶液Ca2++OH-+HCO3-=H2O+CaCO3
⑦氯化铝溶液中加入过量的氨水Al3++4NH3•H2O=AlO2-+4NH4++2H2O
⑧小苏打与甲酸溶液混合H++CO32-+HCOOH=CO2↑+HCOO-+H2O
| A．②④ | B．①⑥ | C．③⑤⑥ | D．①③⑦ |
相关试题
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
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