| ²é¿´: 288 | »Ø¸´: 2 | |||
| µ±Ç°Ö÷ÌâÒѾ´æµµ¡£ | |||
ÎÒÐÄÓÀºã1567ľ³æ (ÕýʽдÊÖ)
|
[½»Á÷]
ÐÞ¸ÄÒ»¶ÎÓ¢ÎÄ
|
||
|
After evaporation to dryness of the aqueous layer then with 0.5 M Na2CO3 neutralizing CF3COOH until the pH near neutral Ͷ¸åµÄÎÄÕ£¬ËµÊDZíÊöÇ·Í× [ Last edited by ÎÒÐÄÓÀºã1567 on 2010-3-1 at 14:39 ] |
» ²ÂÄãϲ»¶
295Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
Ò»Ö¾Ô¸C9µÄ»¯Ñ§¹¤³Ì£¨085602£© 340·Ö£¬¸Ð¾õУÄÚµ÷¼ÁÎÞÍû£¬Çóµ÷¼Á
ÒѾÓÐ9È˻ظ´
070300»¯Ñ§Çóµ÷¼Á
ÒѾÓÐ16È˻ظ´
363Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
283·ÖÇóµ÷¼Á
ÒѾÓÐ3È˻ظ´
²ÄÁÏ»¯¹¤306·ÖÕÒºÏÊʵ÷¼Á
ÒѾÓÐ7È˻ظ´
Ò»Ö¾Ô¸±±¾©»¯¹¤085600 310·ÖÇóµ÷¼Á
ÒѾÓÐ4È˻ظ´
292Çóµ÷¼Á
ÒѾÓÐ9È˻ظ´
µ÷¼Á
ÒѾÓÐ4È˻ظ´
Ò»Ö¾Ô¸9²ÄÁÏѧ˶297ÒѹýÁù¼¶Çóµ÷¼ÁÍÆ¼ö
ÒѾÓÐ5È˻ظ´
sunyixinq
½ð³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 38 (СѧÉú)
- ½ð±Ò: 1069
- É¢½ð: 562
- ºì»¨: 5
- Ìû×Ó: 1229
- ÔÚÏß: 171Сʱ
- ³æºÅ: 732457
- ×¢²á: 2009-03-27
- ÐÔ±ð: GG
- רҵ: ͳ¼ÆÑ§ÆäËûѧ¿Æ

2Â¥2010-03-01 18:13:15
xiaoqihu
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 88
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ¹ó±ö: 0.005
- ½ð±Ò: 9724.8
- É¢½ð: 7
- ºì»¨: 4
- Ìû×Ó: 1337
- ÔÚÏß: 105.6Сʱ
- ³æºÅ: 590066
- ×¢²á: 2008-08-31
- רҵ: ÓлúºÏ³É
ÎÒÐÄÓÀºã1567(½ð±Ò+1): 2010-03-04 11:21
|
After evaporation to dryness of the aqueous layer then with 0.5 M Na2CO3 neutralizing CF3COOH until the pH near neutral ÎÒ¶¼²»ÖªµÀÄãÕâ¸ö¸ÉÔï¹ý³ÌÊÇÔÚpH֮ǰ»¹ÊÇÖ®ºó£¬Äã×îºÃ°ÉÖÐÎÄд³öÀ´°É 1. after evaporation, the aqueous layer, then, was neutralized by Na2CO3. 2. after evaporation, the excess CF3COOH in aqueous layer was neutralized by Na2CO3. 3. before evaporation, the excess CF3COOH in aqueous layer was neutralized by Na2CO3 [ Last edited by xiaoqihu on 2010-3-3 at 09:39 ] |

3Â¥2010-03-02 22:58:27














»Ø¸´´ËÂ¥