In writing the formula of a compound with a polyatomic ion, the formula of the polyatomic ion must be enclosed within parentheses if the subscript of the polyatomic ion is greater than one Therefore the formula of the compound made up of Al3+ Sulfate is?

Question

304 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-02-19T12:48:33

Well let us look at #"calcium sulfate"# and #"aluminum sulfate"#...

We gots to make neutral salts...and so for calcium sulfate, we gots..

#Ca^(2+) + SO_4^(-)-=CaSO_4#

And for aluminum sulfate....we gots ...

#2xxAl^(3+)+ 3xxSO_4^(2-)#...to give...

#Al_2(SO_4)_3#...i.e. we construct the salt by drafting in the required numbers of cations, and anions for NEUTRALITY....