(重量)秤0.5克 溶於100ML水中 加1ML乙酸 以及
25毫升的5% 鄰苯二甲酸氫鉀溶液 持續(xù)攪拌
靜置2小時 用細(xì)孔徑濾紙以過濾坩鍋過濾
以5ML飽和的四苯硼鉀溶液清洗三次
再105度C下乾燥一小時
四苯硼鉀的重量乘以0.9551等於四苯硼的重量
英語翻譯
英語翻譯
(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.
英語人氣：387 ℃時間：2020-06-14 19:11:47
優(yōu)質(zhì)解答
我來回答
類似推薦
猜你喜歡
- 1人類的視覺是什么視覺,是真正看見嗎?
- 2為什么漢語拼音與英文字母一樣?
- 3英語高手可以幫我看一篇文章有什么語法或詞匯錯誤嗎?還能添加點(diǎn)什么嗎?
- 4在家庭電路中，以下情況會引起保險絲熔斷的是（ ?。?A.用測電筆接觸火線 B.連接電路時誤將火線與零線接通 C.將開關(guān)用導(dǎo)線接通 D.電路中用電器總功率過大
- 5理想,在饑餓面前,它是糧食……仿寫句子兩句?
- 6焰色反應(yīng)是一種化學(xué)反應(yīng)嗎?
- 7This ruler is green.同意句
- 8某年的10月份有5個星期二,4個星期三,這年的國慶節(jié)是星期幾
- 9用一根鐵絲圍成一個邊長是8分米的正方形，如果把它拉成平行四邊形，面積減少了16平方分米，這個平行四邊形的高是多少分米？
- 10They arrived at teh small village_____(safe)at last
- 11分?jǐn)?shù)應(yīng)用題一批稻谷放在甲,乙兩個糧庫中,甲庫所存的稻谷數(shù)量是乙?guī)斓陌朔种?后來從甲庫取出42噸,乙?guī)?/a>
- 12You'll never marry her-She's much too good for you