怎样配置酚酞指示剂10g/L乙醇溶液
怎样配置酚酞指示剂10g/L乙醇溶液
是否是要标定
是否是要标定
化学人气:339 ℃时间:2019-11-20 23:07:29
优质解答
先称取1g酚酞溶于少量95%乙中,再用95%乙醇稀释至1000mL即可
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