下列离子方程式中,错误的是                         

下列离子方程式中,错误的是                                   (    )

A.向AlCl3溶液中加入过量氨水:Al3+ + 3 NH3·H2O = Al(OH)3↓+ 3NH4+

B.向硝酸亚铁溶液中加入稀硫酸:3Fe2+ + NO3-+ 4H+ = 3Fe3+ +2H2O +NO↑

C.碳酸氢钡溶液中加入过量氢氧化钠溶液:Ba2+ +HCO3-+OH-=BaCO3↓+H2O

D.Fe2O3溶于过量的氢碘酸:Fe2O3+6H+==2Fe3++3H2O    Ks5u

答案

C D

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