如何配置50%的酒精溶液?? - 酒精
By Ursula
at 2008-03-25T00:00
at 2008-03-25T00:00
Table of Contents
化學老師要我們把濃度95%的酒精溶液加水稀釋到勝濃度50%,請問大大們要如何配置ㄋ?(他沒說要取多少ㄉ酒精)~
Tags:
酒精
All Comments
By Lydia
at 2008-03-27T08:00
at 2008-03-27T08:00
By Hedwig
at 2008-03-29T08:42
at 2008-03-29T08:42
設取100ml 酒精95ml
因此欲配置濃度50%
代表水需要95*2=190 ml
因此再加入90ml 水即可
(酒精一定是體積濃度)
By Selena
at 2008-03-27T18:27
at 2008-03-27T18:27
N1 等於 95% 濃度;V1 等於需要多少容量去稀釋。
N2 等於 50% 濃度;V2 等於要配成的容量。
By Hedwig
at 2008-03-29T03:00
at 2008-03-29T03:00
以99.5%的來說,1L的酒精就加1L的水就是50%,比例約是1:1!
那95%的來說,1L的酒精就加0.95L的水就是50%,比例約是1:0.95!
最後還是要用酒精濃度的尺量!確定比例!
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