(重量)秤0.5克 溶於100ML水中 加1ML乙酸 以及
25毫升的5% 邻苯二甲酸氢钾溶液 持续搅拌
静置2小时 用细孔径滤纸以过滤坩锅过滤
以5ML饱和的四苯硼钾溶液清洗三次
再105度C下乾燥一小时
四苯硼钾的重量乘以0.9551等於四苯硼的重量
英语翻译
英语翻译
(by gravimetry)weight accurately about 0.5g,disslove in 100ml of water,and add 1ml of acetic.add,with constant stirring ,25ml of 5% potassium hydrogen phthalate solution,and allow to stand for 2h.Filter though a tared,fine-porosity filtering crucible,wash with three 5-ml portions of saturated potassium tetraphenylborate sulution,and dry at 105C for 1h.The weight of the potassium tetraphenylborate multiplied by 0.9551 corresponds to the weight of the tetraphenylborate.
(by gravimetry)weight accurately about 0.5g,disslove in 100ml of water,and add 1ml of acetic.add,with constant stirring ,25ml of 5% potassium hydrogen phthalate solution,and allow to stand for 2h.Filter though a tared,fine-porosity filtering crucible,wash with three 5-ml portions of saturated potassium tetraphenylborate sulution,and dry at 105C for 1h.The weight of the potassium tetraphenylborate multiplied by 0.9551 corresponds to the weight of the tetraphenylborate.
英语人气：399 ℃时间：2020-06-14 19:11:47
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