题干

某化学兴趣小组的同学为探究二氧化硫的化学性质,设计了如图所示的装置.

请回答下列问题.

(1)铜和浓硫酸反应的化学方程式为 ____ 

(2)B瓶中盛有品红溶液,观察到品红溶液褪色,这是因为 SO2具有____ (填选项的字母,下同),C瓶中盛有新制的氯水,观察到氯水褪色,这是因为SO2具有____ .

A.氧化性       B.还原性    C.漂白性

(3)D瓶中盛有NaOH溶液,作用是____ 

(4)充分反应后,小组同学发现铜和硫酸都有剩余.若想使剩余的铜片溶解,可再加入(多选)____ (填选项的字母).

A.HNO3 B.NaNO3       C.Fe2O3      D.Na2CO3

上一题 下一题 0.0难度 选择题 更新时间:2020-01-16 12:17:52

答案(点此获取答案解析)

Cu+2H2SO4\uff08\u6d53\uff09=\u25b3CuSO4+SO2\u2191+2H2O,C,B,\u5438\u6536\u5c

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