试题 试卷
题型:单选题 题类:常考题 难易度:普通
①2Na2O2+2H2O=4NaOH+O2↑
②4Fe(OH)2+O2+2H2O=4Fe(OH)3
③2F2+2H2O=4HF+O2
④2Al+2NaOH+2H2O=2NaAlO2+3H2↑
①2Na2O2+2H2O=4NaOH+O2 ②3S+6NaOH 2Na2S+Na2SO3+3H2O ③SiO2+3C SiC+2CO↑ ④4HCl(浓)+MnO2 MnCl2+Cl2↑+2H2O
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