题目:
下列离子方程式表达正确的是( )
A.用惰性电极电解熔融氯化钠:2Cl-+2H2O
Cl2↑+H2↑+2OH- 通电 .
B.用氢氧化钠溶液除去铝表面的氧化膜:Al2O3+2OH-═2AlO2-+H2O
C.用稀氢氧化钠溶液吸收二氧化氮:2OH-+2NO2═NO3-+NO↑+H2O
D.用食醋除去水瓶中的水垢:CO32-+2CH3COOH═2CH3COO-+CO2↑+H2O
答案:
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