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In a 50 ml three-necked flask with the
middle neck connected to a dry ice cold-finger condenser,  The flask was flushed with N, for
15 min before NH3,(g) was introduced via the one neck and NH3,(l) allowed to
condense on the cold finger. About 15 ml of liquid ammonia were condensed
(- 77¡ãC). The solution was stirred for 30 min with a magnetic stirrer and the NH,
then allowed to evaporate (about 1 h) by removing the dry ice from the condenser.
Ë­×ö¹ýÕâ·½ÃæµÄÊÔÑé,°ïÎÒ¿´¿´Ôõô×ö,ÎÒÐÂÊÖ,²»ÖªµÀ¸ÃÔõô×ö.¹Ø¼üÊÇa dry ice cold-finger condenser,ÊÇʲô,»¹ÓÐ NH3,(l) allowed to
condense on the cold finger. About 15 ml of liquid ammonia were condensed
(- 77¡ãC). ¶àлÁË

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In a 50 ml three-necked flask with the middle neck connected to a dry ice cold-finger condenser  ÔÚ50mlÈý¾±Æ¿Öм侱¿ÚÁ¬½Ó¸É±ùÀäÄýÆ÷¡£The flask was flushed with N, for 15 min before NH3,(g) was introduced via the one neck,ÔÚ°±ÆøÍ¨ÈëÒÔǰ£¬Èý¿ÚƿӦ¸ÃͨÈëµªÆø15·ÖÖÓ£¨Ó¦¸ÃÊǸÏ×ß¿ÕÆø£©and NH3,(l) allowed to condense on the cold finger.Òº°±¿Éͨ¹ý¸É±ùÀäÄýÆ÷ÀäÄý¡£About 15 ml of liquid ammonia were condensed(- 77¡ãC). ·´Ó¦ÐèÒª15ml×óÓҵı»ÀäÈ´µÄÒº°±¡£
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huoyingfei

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2Â¥2007-10-06 12:27:59
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yuxinghai455

Òø³æ (ÕýʽдÊÖ)

In a 50 ml three-necked flask with the
middle neck connected to a dry ice cold-finger condenser  ÔÚ50mlÈý¾±Æ¿Öм侱¿ÚÁ¬½Ó¸É±ùÀäÄýÆ÷¡£
NH3,(l) allowed to condense on the cold finger.Òº°±¿Éͨ¹ý¸É±ùÀäÄýÆ÷ÀäÄý¡£
About 15 ml of liquid ammonia were condensed(- 77¡ãC).
·´Ó¦ÐèÒª15ml×óÓҵı»ÀäÈ´µÄÒº°±¡£
3Â¥2007-10-06 13:16:05
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huoyingfei

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