V L硫酸铝溶液含有n mol Al3+,则溶液中SO42-物质的量的浓度为_.

问题描述:

V L硫酸铝溶液含有n mol Al3+,则溶液中SO42-物质的量的浓度为______.

n(Al3+)=

nmol
V
=
n
V
mool/L,c(SO42-)=
3
2
c(Al3+)=
3n
2V
mol/L,
故答案为:
3n
2V
mol/L.