Question

硅能与强碱溶液作用生成硅酸盐和氢气：Si+2NaOH+H₂O=Na₂SiO₃+2H₂↑ 对于这个反应，下列说法正确的是(    )

A.Si是氧化剂                                          B.Si是还原剂

C.NaOH和H₂O是氧化剂                          D.水是氧化剂

Answer 1

               ①

H₄SiO₄=H₂SiO₃+H₂O                                        ②

2NaOH+H₂SiO₃=Na₂SiO₃+2H₂O                       ③

简化成：Si+2NaOH+H₂O=Na₂SiO₃+2H₂↑

答案：BD