This laboratory work is a classic investigative task aimed at identifying unknown anions - sulphide, sulphite and suphate. During the experiment, it is necessary to determine how the studied substance reacts with various qualitative reagents of known composition, and, based on the observed reactions, identify the unknown compounds.
The system automatically checks correctness of each identification performed by students.
equipment: spawner, destroyer, tablet
glassware and items: Erlenmeyer flask 250 ml
solutions and liquids: HCl, H₂SO₄, NaOH, BaCl₂, CaCl₂, Pb(NO₃)₂, CuSO₄, KMnO₄, Na₂S, Na₂SO₃, Na₂SO₄, Unknown liquids 1-4 (Na₂S, Na₂SO₃, Na₂SO₄, H₂O )
autocheckers: Na₂S, Na₂SO₃, Na₂SO₄, H₂O (1 point each)