现有H2SO4和NaSO4溶液200ml,其中H2SO4的浓度是1mol/L,Na2SO4de 浓度是0.5mol/L,要使H2SO4和Na2SO4的浓度分别为2mol/L和0.2mol/L,求应加入55.8%的H2SO4（密度为1.35g/cm三次方）溶液的体积和配置的溶液的体积.
人气：201 ℃ 时间：2019-10-05 02:35:49
解答
配置的溶液的体积v=200×0.5/0.2=500ml
c（55.8%硫酸）=1000×1.35×55.8%/98=7.6868mol/L
应加入55.8%的H2SO4溶液的体积
（500×2-200×1）/7.6867=104ml
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