含0.6molAl3+的Al2(SO4)3中所含的SO42-物质的量是_.
问题描述:
含0.6molAl3+的Al2(SO4)3中所含的SO42-物质的量是______.
答
Al2(SO4)3中n(Al3+):n(SO42-)=2:3,
n(Al3+)=0.6mol,
则n(SO42-)=0.6mol×
=0.9mol,3 2
故答案为:0.9mol.