酒精的配製法 - 酒精
By Adele
at 2008-04-20T00:00
at 2008-04-20T00:00
Table of Contents
如果95%酒精有有20000ml、那如果想配成75%酒精、要加多少ml的水?有什麼公式可以換算嗎?
Tags:
酒精
All Comments
By Tristan Cohan
at 2008-04-23T04:01
at 2008-04-23T04:01
而20000 ml 加 x ml 水後變成 75% 溶液
20000 X 95% = ( 20000 + x) X 75%
19000 = 0.75x +15000
0.75x = 4000
x=5333
驗算:原溶液純酒精=20000 x 95%=19000
新溶液純酒精=(20000+5333)x75%=19000
所以要加水 5333 ml
在化學或化工計算中要找出不變成份當基準就能找出方程式
By Emma
at 2008-04-22T13:14
at 2008-04-22T13:14
如果在理想狀況下
MV=MV
答案是4000毫升
自己算吧
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