Lithium

Sodium

Potassium

Calcium

Ammonium (NH4+)
NH4+ + OH- -> NH3 + H2O

Copper (II)
Cu(II) ion (aq) + 2 OH- ions (aq) -> Cu(OH)2 (s)

Iron (II)

Iron (III)

Cl-

Br-

I-

Sulfate

Carbonate
CO3 ion + 2H+ ion ->CO2 + H2O

Ammonia

CO2

Chlorine gas

Hydrogen
2H2 + O2 -> 2H2O

Water (1)

Water (2)