2009 National Question 3 Single-choice Differentiating 2009_全国卷 (化学) 3．（5分）下列表示溶液中发生反应的化学方程式错误的是（ ） A. $2Al+2NaOH+2H2O=2NaAlO2+3H2$↑B. $KMnO4+HCOOH+KOH=2K2MnO4+CO2$↑+H2OC. MnO2+4HCl（浓）MnCl 2+Cl2↑+2H2OD. $K2Cr2O7+6FeSO4+7H2SO4=Cr2$（SO4）3+3Fe2（SO4）3+K2SO4+7H2O Answer keyB ☆ SaveCan't do it, show the explanation查看原卷 →