The following equation is not balanced:
CaSO4+AlCl3âCaCl2+Al2(SO4)3
Notice that "SO4" appears in two different places in this chemical equation. SO 2â4â is a polyatomic ion called sulfate . What number should be placed in front of CaSO4 to give the same total number of sulfate ions on each side of the equation?
?CaSO4+AlCl3âCaCl2+Al2(SO4)3