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北京石油化工學(xué)院2026年研究生招生接收調(diào)劑公告

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本帖產(chǎn)生 1 個(gè) 翻譯EPI ，點(diǎn)擊這里進(jìn)行查看

沙海林空

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[求助] 請(qǐng)幫忙翻譯一句話

RT...翻譯文段中字體標(biāo)為紅色句子，謝謝！
A solution of 5.46 g (0.048 mole) of squaric acid in 250 ml of
water was neutralized with 1 N sodium hydroxide and treated with a
solution of 16.3 g (0.096 mole) of silver nitrate in 100 ml of water.
The light yellow precipitate of disilver squarate was filtered and
washed with water, acetone, and ether. Concentration of the filtrate led to additional silver squarate,
which was soluble to the extent of about 0.4%. The dried silver salt was boiled for 2 hr in
25 ml of methyl iodide and 50 ml of ether and shaken for 2 days.
The mixture was filtered. the residue was washed with ether, and the
ether was concentrated, leading to Ib, 5.45 g (0.038 mole, 79%
yield), mp 56.7-58.0", fluffy white crystals, soluble in methanol and
benzene. Infrared absorption bands (potassium bromide pellet)
were at 3.5. 5.55, 5.8, 6.3. 6.75, 7.1, 7.35, 8.2. 8.75, 9.2, 9.65. 10.65, I . , I . . . , , ,
10.75, and 12 p.

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Die-Luft-der-Freiheit-weht.

1樓 2012-10-24 16:41:09

已閱回復(fù)此樓關(guān)注TA 給TA發(fā)消息送TA紅花 TA的回帖

vivanslum

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【答案】應(yīng)助回帖

★ ★ ★ ★ ★ ★
愛與雨下: 金幣+1 2012-10-24 19:27:05
沙海林空: 金幣+5, 翻譯EPI+1, ★有幫助 2012-10-24 22:18:55

濾液濃縮會(huì)產(chǎn)生額外的方酸銀（不確定silver squarate），此產(chǎn)物在到約0.4％含量的范圍內(nèi)都是可溶的。

贊一下

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心若調(diào)適，道可得矣；清凈安樂，道不失矣

2樓2012-10-24 18:23:52