题目

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.

提问时间：2020-11-23

答案

(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