简答题

今欲配制C(1/2H2SO4)=1.0mol/L的标准溶液500毫升,须用含96.0%(W/W)相对密度为1.84的浓硫酸多少毫升? (硫酸的摩尔质量为98.08).

正确答案

设需密度为1.84的浓硫酸X毫升
M(1/2H2SO4 )=49.04
X.d.m% =C.Vd.M(1/2H2SO4)
X ==13.9毫升 需浓硫酸l3.9毫升。

答案解析

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