设定500ml的0.995的冰乙酸，加多少v（ml）水是百分之36的乙酸？【解】0.995x500/（500+v）= 0.36 ；0.995x500 = 0.36x500+0.36v497.5- 180 = 0.36v； v = 317.5/0.36 = 882ml【答】500ml的0.99.5%的冰乙酸，加多少v=882ml水是百分之36%的乙酸。
