Al2(SO4)3——2Al,所以 nA12(SO4)3=0.02/2=0.01mol 10克硫酸铝溶液的体积为10/p ml=10/1000p =1/100p 升 c(AI2(SO4)3=0.01 /1/100p=1/p c(SO42-)=3/p