zinc sulfate solid is ZnSO4(s)
The product is the ionization of the strong electrolyte:
H2O
ZnSO4 (s) --------> Zn(2+) (aq) + SO4(2-) (aq)
The sates are:
s = solid
aq = aqueous
This is each molecule of solid ZnSO4 will produce one cation Zn(2+) and one anion SO4(2-) in aqueous solution.
