Ca(OH)2 -> Ca^2+ + 2OH- Al2(SO4) -> 2Al^3+ + 3SO4^2- Cu(NO3)2 -> Cu^2+ + 2NO3- Mg(NO3)2 -> Mg^2+ + 2NO3-
Ca(OH)2 -> Ca^2+ + 2OH-
Al2(SO4) -> 2Al^3+ + 3SO4^2-
Cu(NO3)2 -> Cu^2+ + 2NO3-
Mg(NO3)2 -> Mg^2+ + 2NO3-