题目内容

合乎实际并应用于工业生产的是                                  (   )
A.金属钠在氯气中燃烧制氯化钠
B.氢气和氯气混合后经光照制氯化氢
C.氯气和澄清石灰水作用制漂白粉
D.浓硫酸和莹石(CaF2)在铅制容器中作用制氟化氢
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双氧水(H2O2)是一种极弱电解质,也是一种“绿色氧化剂”。为了贮存、运输的方便,工业上将其转化为固态过碳酸钠(2Na2CO4·3H2O),该物质具有Na2CO3与H2O2的双重性质。请回答下列问题:
(1)写出H2O2的电子式:                                                                                     ,并写出它与SO2反应的化学方程式                                                                                                                          
(2)若把H2O2看成二元弱酸,写出它在水中第一步电离的方程式                                              
(3)下列物质不会使过碳酸钠失效的是                                                                         
A.MnO2B.NaHCO3C.H2SD.CH3COOH
(4)稀H2SO4不与Cu反应,但在稀H2SO4中加入H2O2后则可使Cu溶解,写出该反应的化学方程式,并用单线桥标明电子转移的方向和数目。                                                                                                            
(5)H2O2成为“绿色氧化剂”的理由是                                                                                                                                                                                                                                     

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