What is the formula of aluminum sulfate?

Jan 8, 2017

$A {l}_{2} {\left(S {O}_{4}\right)}_{3}$
Sulfate is a polyatomic ion with formula ${\left(S {O}_{4}\right)}^{2 -}$. Aluminum is a group 3A metal which forms a $3 +$ cation.
$A {l}_{2} {\left(S {O}_{4}\right)}_{3}$