| 查看: 739 | 回复: 4 | ||
secretyam木虫 (正式写手)
|
[求助]
德语化学论文翻译（只要大体意思清楚就可以）
|
由于复制过来文字出现变化，以图片格式上传。 德语论文翻译.png[ Last edited by nono2009 on 2015-8-26 at 08:47 ] |
回复此楼» 猜你喜欢
085701求调剂
已经有8人回复
-
321求调剂
已经有11人回复
-
26考研调剂0710 0860
已经有12人回复
-
270化工求调剂
已经有9人回复
-
一志愿0817化学工程与技术，求调剂
已经有23人回复
-
309求调剂
已经有7人回复
-
一志愿北京化工大学，初试成绩350求调剂
已经有7人回复
-
081700化学工程与技术 一志愿中海洋 323 求调剂学校
已经有13人回复
-
求调剂：085600材料与化工，考材科基，总分319
已经有24人回复
-
土木304求调剂
已经有4人回复
2楼2015-08-25 00:49:00
secretyam
木虫 (正式写手)
- 应助: 0 (幼儿园)
- 金币: 1876.4
- 红花: 1
- 帖子: 393
- 在线: 205小时
- 虫号: 1016764
- 注册: 2010-05-12
- 性别: GG
- 专业: 绿色有机化学
3楼2015-08-25 08:31:46
secretyam
木虫 (正式写手)
- 应助: 0 (幼儿园)
- 金币: 1876.4
- 红花: 1
- 帖子: 393
- 在线: 205小时
- 虫号: 1016764
- 注册: 2010-05-12
- 性别: GG
- 专业: 绿色有机化学
4楼2015-08-25 08:32:35
yifeng1206
铁杆木虫 (著名写手)
- 翻译EPI: 21
- 应助: 75 (初中生)
- 金币: 6164.4
- 散金: 1350
- 红花: 22
- 帖子: 1510
- 在线: 861.7小时
- 虫号: 734148
- 注册: 2009-03-29
- 性别: MM
- 专业: 生物材料
【答案】应助回帖
|
Recall of the preparation method of nickel hexamine salt We have used the classic preparation method, with some modification for avoiding, in certain case, the degradation of the complexes. As a general manner, they are obtained, often around 0 °, by passage of a stream of desiccated ammonia on: a) the simple salt of nickel dehydrated (this is the case for the preparation of 氯化物和硫化物) or hydrated (溴化物，溴酸盐) or in syrupy mass (thiocyanate) deposited on the wafer of a filter crucible: 多余的水因此被吸干。The nickel salt can be also in concentrated aqueous solution (chlorate) or hydro-ammonia (碘和硝酸); b) on a 碱性盐, such as chromate; c) on a simple nickel chloride (for the preparation of高氯酸盐&过硫酸盐) or on the nickel hydroxide dissolved in the ammonia (preparation of normal 钼酸&钨) which we treat, furthermore the ammonia bubbling, by a concentrated solution of ammonium salt corresponding in ammonia. After filtration and wash with alcohol-ammonia, it is appropriate to sweep length by ammonia gas to dry and move resting water presented in the complex cation. The铬酸盐 & 过硫酸盐 should be prepared away from air and be conserved, as well as钨, in ammonia atmosphere. |
5楼2015-09-02 20:49:16
