±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 483  |  »Ø¸´: 1
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

Æ®Âä½­ÄÏ

Í­³æ (ÕýʽдÊÖ)

[ÇóÖú] Ó¢Ò뺺»¯Ñ§·´Ó¦Á÷³ÌÇóÖú

chemist puts 1700 ml of water
in a 3000 ml flask. Half of the sulfuric acid
solution is added to it. It is heated in a pan of
boiling water for a couple of hours. It is given a
couple of good shakes every 15 minutes. A layer
of phenylacetone forms in the mixture.
After 2 hours of heating, the mixture is poured
into a gallon-size glass jug to cool off. Another
1700 ml of water is put in the flask and the rest ofthe chilled sulfuric acid solution is poured into it.
It is also heated for 2 hours in a pan of boiling
water, then poured into another glass jug

» ²ÂÄãϲ»¶

Ç°ÃæÓÐֻС»¨Ã¨
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

³Ô³æ×ÄľÄñ

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
Æ®Âä½­ÄÏ: ½ð±Ò+30, ·­ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2013-10-20 17:39:44
¿ÆÑ§¼Ò£¨ÊµÑéÈËÔ±£©ÔÚÒ»¸ö3000ºÁÉýµÄ³¤¾±Æ¿ÖзÅÈë1700ºÁÉýË®£¬½«Ò»°ëÁòËáÈÜÒº¼ÓÈëÆäÖС£·ÅÖÃÒ»¹ø£¨Ë®Ô¡¹ø°É£©·ÐË®ÖмÓÈÈ2Сʱ£¬Ã¿15·ÖÖÓ³ä·Ö½Á°è£¨Õðµ´£©Ò»´Î¡£Ò»²ãÜлù±ûͪ½«»áÔÚ»ìºÏÎïÖÐÐγɣ¬¼ÓÈÈ2Сʱºó£¬½«»ìºÏÎïµ¹Èë1¼ÓÂØ´óСµÄ²£Á§ºøÖÐÀäÈ´£¬½«ÁíÍâ1700ºÁÉýË®µ¹È볤¾±Æ¿£¬È»ºó½«Ê£ÏµÄÒ»°ëÁòËáÈÜÒºµ¹È볤¾±Æ¿£¬È»ºóÔÙ·ÐˮԡÖмÓÈÈ2Сʱ£¬È»ºóµ¹ÈëÁíÒ»¸ö²£Á§ºø¡££¨ps£ºË®Æ½ÓÐÏÞ£¬¼ûЦÁË£©
ÃÒ²»Óгõ£¬ÏÊ¿ËÓÐÖÕ
2Â¥2013-10-16 22:09:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ Æ®Âä½­ÄÏ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ÉúÎïÓëÒ½Ò©Çóµ÷¼Á +5 heguanhua 2026-04-05 6/300 2026-04-05 22:58 by Hdyxbekcb
[¿¼ÑÐ] 348Çóµ÷¼Á +3 ³µÀå×Ózzz 2026-04-05 3/150 2026-04-05 20:30 by à£à£à£0119
[¿¼ÑÐ] 308Çóµ÷¼Á +3 ÖÕ²»ËÆ´Óǰ 2026-04-05 3/150 2026-04-05 20:07 by à£à£à£0119
[¿¼ÑÐ] Ò»Ö¾Ô¸Çà¿Æ085500£¬³õÊÔ295·Ö£¬¹«¹²¿Î213·Ö +3 Óöµ½µÄÈËÔ¸Íû¶¼Ä 2026-04-05 3/150 2026-04-05 18:45 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 081700ѧ˶£¬323·Ö£¬Ò»Ö¾Ô¸Öйúº£Ñó´óѧÇóµ÷¼ÁѧУ +16 ÅûÐÇºÓ 2026-04-04 16/800 2026-04-05 11:27 by Öí»á·É
[¿¼ÑÐ] 323Çóµ÷¼Á +8 Àî¼ÑÀÖ1 2026-04-04 8/400 2026-04-04 22:26 by hemengdong
[¿¼ÑÐ] 316Çóµ÷¼Á +9 Ä«³½_Orion926 2026-04-04 9/450 2026-04-04 21:35 by lbsjt
[¿¼ÑÐ] 085701Çóµ÷¼Á +7 ¹¨ÓíÃú 2026-04-04 8/400 2026-04-04 13:49 by ССÊ÷2024
[¿¼ÑÐ] 0856µ÷¼Á +8 ÇúÌýóÞ 2026-03-30 8/400 2026-04-04 08:46 by tianyyysss
[¿¼ÑÐ] 294Çóµ÷¼Á +6 Grey_Ey 2026-04-03 6/300 2026-04-03 20:46 by ÐÀϲ777
[¿¼ÑÐ] 286Çóµ÷¼Á +8 lim0922 2026-04-02 8/400 2026-04-03 20:19 by rzh123456
[¿¼ÑÐ] 312 »¯¹¤»òÖÆÒ©µ÷¼Á +8 ССī123 2026-04-02 9/450 2026-04-03 09:12 by zhouxiaoyu
[¿¼ÑÐ] Çóµ÷¼Á +7 Aniyaio 2026-04-02 7/350 2026-04-02 16:42 by zzsw+
[¿¼ÑÐ] 08ÉúÎïÓëҽҩר˶³õÊÔ346ÕÒµ÷¼Á +6 dianeeee 2026-04-01 7/350 2026-04-02 08:23 by guoweigw
[¿¼²©] 26ÄêÉ격 +3 staryer 2026-03-30 4/200 2026-04-01 23:21 by ai4pharm
[¿¼ÑÐ] 11408 321·ÖÇóµ÷¼Á +3 huchun12138 2026-03-30 4/200 2026-04-01 22:48 by guanxin1001
[¿¼ÑÐ] 298Çóµ÷¼Á +4 ʲôÊÇÅÖÍ·Óã 2026-03-30 6/300 2026-04-01 22:06 by ¿Í¶ûÃÀµÂ
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +10 Eujd1 2026-03-31 11/550 2026-04-01 11:23 by ivanqyq
[¿¼ÑÐ] 085601Ó¢¶þÊý¶þÇóµ÷¼Á ×Ü·Ö325 +4 Óຽº½ 2026-03-31 4/200 2026-03-31 17:38 by ÌÆãå¶ù
[¿¼ÑÐ] 085601 329·Öµ÷¼Á +6 yzsa12 2026-03-31 6/300 2026-03-31 15:23 by yanflower7133
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û