Kit tests characteristics of ions at high school

Concentrations are studied to observe the formation of a precipitate in an aqueous solution.
The formation is not completely immediate so that the student can observe both environments.

It allows for conducting tests for the following ions ten times: Ag⁺, Cu²⁺, Fe²⁺, Fe³⁺, Zn²⁺, Cl^-, SO₄^2-, and Ca_²⁺.
The reagents used for these reactions are sodium hydroxide (Na⁺, HO^-)aq, silver nitrate (Ag⁺, NO₃^-)aq, barium chloride (Ba, Cl^-), and ammonium oxalate monohydrate ((NH₄⁺)₂,C₂O₄^2-)aq.

9 plastic dropper bottles of 30 mL each containing: - 1 solution of copper sulfate - 1 solution of iron(II) sulfate - 1 solution of iron(III) sulfate - 1 solution of zinc nitrate - 1 solution of sodium chloride - 1 solution of sodium sulfate - 1 solution of calcium chloride - 1 solution of ammonium oxalate to identify calcium ions. - 1 solution of barium chloride to identify sulfate ions. 1 yellow glass dropper bottle of 30 mL containing: - 1 solution of silver nitrate to identify the anion. 1 plastic dropper bottle of 60 mL containing: - 1 solution of sodium hydroxide to identify cations.