化學問題-酒精的配置~煩請解答!謝謝~ - 酒精
By Anthony
at 2006-10-18T00:00
at 2006-10-18T00:00
Table of Contents
欲以95%酒精和水配置最佳濃度為75%ㄉ酒精來殺菌,則酒精和水ㄉ比例約略是多少?
Update:
請描述過程~
Update 2:
謝謝~這就是我想要ㄉㄌ~96:25約是4:1!^^
Update:
請描述過程~
Update 2:
謝謝~這就是我想要ㄉㄌ~96:25約是4:1!^^
Tags:
酒精
All Comments
By Aaliyah
at 2006-10-21T20:23
at 2006-10-21T20:23
如果是要用95%的酒精直接稀釋的話,100毫升的95%酒精大約要再加上26毫升的水,比例式如下:
100毫升95%酒精內 酒精佔95毫升,所以可列式:
95/100+x=75%=75/100 →9500=7500+75x →75x=2000 →x=26.67(稀釋用的水)
所以95毫升的酒精除以總重126毫升的水加酒精,濃度就大約是75.3%了
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