向滴有酚酞的水中加入过量Na2O2粉末并振荡,下列实验现象中正确的

向滴有酚酞的水中加入过量Na2O2粉末并振荡,下列实验现象中正确的是①溶液始终呈现无色 ②溶液由无色变红又变无色 ③溶液中有气泡产生 ④溶液由无色变为红色(  )

A.③④ B.①②     C.②③  D.①④

 

答案

C

解析:略

 

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