Ksp(BaSO4)=c(Ba2+)×c(SO4 2-)=1.1*10^-10
0.2mol/L的Ba(OH)2溶液里,
c(Ba2+)×c(SO4 2-)=1.1*10^-10
c(SO4 2-)=1.1*10^-10÷c(Ba2+)=1.1*10^-10÷0.2=5.5×10^-10 mol/L
同理,0.5mol/L的Na2SO4溶液中
c(Ba2+)=1.1*10^-10÷c(SO4 2-)=1.1*10^-10÷0.5=2.2×10^-10 mol/L
Ksp(BaSO4)=c(Ba2+)×c(SO4 2-)=1.1*10^-10
0.2mol/L的Ba(OH)2溶液里,
c(Ba2+)×c(SO4 2-)=1.1*10^-10
c(SO4 2-)=1.1*10^-10÷c(Ba2+)=1.1*10^-10÷0.2=5.5×10^-10 mol/L
同理,0.5mol/L的Na2SO4溶液中
c(Ba2+)=1.1*10^-10÷c(SO4 2-)=1.1*10^-10÷0.5=2.2×10^-10 mol/L