| 查看: 443 | 回复: 1 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
沙海林空木虫 (正式写手)
|
[求助]
请帮忙翻译一句话
|
|
|
RT...翻译文段中字体标为红色句子，谢谢！ 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. |
回复此楼» 猜你喜欢
接受任何调剂
已经有6人回复
-
22408 312求调剂
已经有26人回复
-
收到复试调剂但是去不了
已经有8人回复
-
260求调剂
已经有5人回复
-
急需调剂
已经有10人回复
-
申博/考博
已经有4人回复
-
化工学硕294分，求导师收留
已经有37人回复
-
求调剂
已经有11人回复
-
一志愿华中农业071010，320求调剂
已经有19人回复
-
304求调剂
已经有7人回复
vivanslum
木虫 (正式写手)
- 翻译EPI: 94
- 应助: 10 (幼儿园)
- 金币: 5587.9
- 散金: 21
- 红花: 4
- 帖子: 547
- 在线: 600.7小时
- 虫号: 1801798
- 注册: 2012-05-07
- 专业: 环境工程
2楼2012-10-24 18:23:52
