实验室常用右图所示发生装置制备氢气。 (1)写出试管中反应的化

实验室常用右图所示发生装置制备氢气。

1)写出试管中反应的化学方程式                                 

2)仪a 的名称是_________。实验室可用             方法收集氢气。

3)氢气作为新能源的优点是        (写出1 点即可,下同)。目前氢能源的大量使用仍存在一定困难,你认为针对氢能源的研究方向是                            

答案

【答案】(1Zn+ H2SO4 == ZnSO4 + H22)铁架台,向下排空气法或排水法

3)燃烧产物是水,不污染空气;在不通电的条件下使水分解

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