硼砂-水缓冲溶液PH=9.18如何配?
人气:475 ℃ 时间:2020-03-27 06:15:52
解答
称3.80g分析纯硼砂Na2B4O7.10H2O ,加水溶解,全部转入1000mL容量瓶,加水至刻度,溶液浓度 0.01 mol /L .25℃ ,pH =9.18 .
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