如图所示ab是两根石墨棒.下列叙述正确的是 A.稀硫酸ph增大b.饱和食盐水ph减小c.a是正极�生还原反应d.往滤纸上滴加酚酞试液 Template




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tomski如图所示ab是两根石墨棒.下列叙述正确的是 a.稀硫酸ph增大b.饱和食盐水ph减小c.a是正极�生还原反应d.往滤纸上滴加酚酞试液 coloring