Write mass and charge balances for SrSo4 (s)+ So4^2-

Question

So4^2- + H2O --> HSO4- + OH-
and
H2)---> H+ + OH-

Answer 1

Did you mean,
SrSO4(s) ==> Sr^+2 + SO4^= and
SO4^= + H2O ==> HSO4^- + OH^-
Then
MB: (Sr^+2) = (SO4^=) + (HSO4^-)
CB: 2*(Sr^+2)=2*(SO4^=) + (HSO4^-) + (OH^-)