Materials	Substitutions
0.1 M NaCl
0.1 M CuSO4
0.1 M AgNO3
0.1 M Na3PO4
0.1 M NaOH
spot plate	6 watch-glasses
5 droppers

Procedure

1. Using a spot plate, place 10 drops of NaCl solution into wells I and IV, 10 drops of NaOH into wells II and V, and 10 drops of Na₃PO₄ into wells III and VI.
2. Using the diagram above, add 10 drops of CuSO₄ to wells I, II, and III and 10 drops of AgNO₃ to wells IV, V, and VI.
3. Note any color changes or precipitate formation.
4. Write a balanced equation for the reactions that occur. Include physical state symbols for the reactants and products. If no precipitate occurred, NO REACTION occurred.

Data and Observations

I.

II.

III.

IV.

V.

VI.

Teacher's Notes

I. NaCl (aq) + CuSO₄ (aq) --> No Reaction.

II. 2 NaOH (aq) + CuSO₄ (aq) --> Na2SO₄ (aq) + Cu(OH)₂ (s)

III. Na₃PO₄ (aq) + CuSO₄ (aq) --> No Reaction

IV. NaCl (aq) + AgNO₃ (aq) --> NaNO₃ (aq) + AgCl (s)

V. NaOH (aq) + AgNO₃ (aq) --> NaNO₃ (aq) + AgOH (s)

VI. Na₃PO₄ (aq) + AgNO₃ (aq) --> 2 NaNO₃ (aq) + Ag₃PO₄ (s)

Disposal

Aqueous solutions may be flushed down the sink. Solids should be collected and placed into a labeled, solid waste container.

Return to Countertop Chemistry