题干

用石墨作电极,电解1mol/L下列物质的溶液,溶液的pH保持不变的是(  )

A:HCl

B:Na2SO4

C:NaCl

D:NaOH

上一题 下一题 0.0难度 选择题 更新时间:2017-06-08 01:54:30

答案(点此获取答案解析)

B

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