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1.

自来水是用氯气杀菌消毒的,不法商贩用自来水冒充纯净水出售,为辨别真伪,可用下列哪种试剂鉴别(  )


A:

酚酞溶液

B:

酸化的FeCl3溶液

C:

酸化的AgNO3溶液

D:

NaOH溶液

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