1.1) Potassium phosphate2) Barium nitrate
2.1) Potassium hydroxide + Hydrochloric acid = Potassium chloride + Water2) Copper(II) nitrate + Sodium hydroxide = Copper(II) hydroxide + Sodium nitrate3) Potassium carbonate + Phosphoric acid = Potassium phosphate + Carbon dioxide + Water
3.1) Zinc ion + Sulfide ion = Zinc sulfide (precipitate)
1.1) Potassium phosphate
2) Barium nitrate
2.1) Potassium hydroxide + Hydrochloric acid = Potassium chloride + Water
2) Copper(II) nitrate + Sodium hydroxide = Copper(II) hydroxide + Sodium nitrate
3) Potassium carbonate + Phosphoric acid = Potassium phosphate + Carbon dioxide + Water
3.1) Zinc ion + Sulfide ion = Zinc sulfide (precipitate)