今有0.1mol/L Na2SO4溶液300mL,0.1mol/L MgSO4溶液200mL和0.1mol/L Al2(SO4)3溶液100mL,这三种溶液中硫酸根离子浓度之比是
A.1:1:1 | B.3:2:1 | C.3:2:3 | D.1:1:3 |
今有0.1mol/L Na2SO4溶液300mL,0.1mol/L MgSO4溶液200mL和0.1mol/L Al2(SO4)3溶液100mL,这三种溶液中硫酸根离子浓度之比是
A.1:1:1 | B.3:2:1 | C.3:2:3 | D.1:1:3 |