计算题:c(1/2硫酸)=4mol/L的硫酸溶液250ml,问再加多少毫升98%的浓硫酸能配成c(1/2硫酸)=6mol/L的溶液

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计算题:c(1/2硫酸)=4mol/L的硫酸溶液250ml,问再加多少毫升98%的浓硫酸能配成c(1/2硫酸)=6mol/L的溶液

设需再加x毫升98%的浓硫酸能配成6mol/L的溶液,配制前稀硫酸:ρ(H2SO4)=1.24g/cm3,c(H2SO4)=4mol/L,v(H2SO4)=250ml=0.25L,n(H2SO4)=4mol/L*0.25L=1molm[H2SO4(aq)]=1.24g/cm3*250=310g配制前浓硫酸:w(H2SO4)=98...