A.实验室用大理石和稀盐酸制取CO2:2H+ + CO32- = CO2↑+ H2O |
B.氢氧化钡溶液与盐酸反应:OH-+H+ = H2O |
C.三氯化铁溶液中加入铁粉: Fe3++ Fe= 2Fe2+ |
D.钠投入水中:Na +H2O = Na+ + OH- + H2↑ |
A.Ca(ClO)2溶液中通入过量CO2:Ca2++2C1O-+H2O+CO2 |
B.Ba(OH)2溶液中滴入NaHSO4溶液至恰好为中性: 2H++SO42-+Ba2++2OH- |
C.金属钠投入水中:2Na+H2O===2Na++OH-+H2↑ |
D.NaOH溶液中通入C12:2C12+2OH- |
A.氯化铝溶液与过量氨水 Al3++3NH3·H2O →Al(OH)3↓+3NH4+ |
B.明矾净水原理:Al3++3H2O →Al(OH)3↓+3H+ |
C.将足量氯气通入溴化亚铁溶液:2Fe2++Cl2→2Fe3++2Cl- |
D.偏铝酸钠溶液与过量盐酸AlO2-+H++H2O →Al(OH)3↓ |
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