Kitchen Chemistry Experiment 11
Micro-Reaction Lab: Double Replacement

Procedure

 

1. Use 8-10 drops of each solution required.
2. Note any color changes or precipitate formation.
3. Use the Table of Solubility in Water to help predict insoluble products. If both products are soluble in water, NO REACTION occurs.
4. Write a balanced formula equation for the reactions that do occur. Include physical state symbols for the reactants and products.

Teacher's Notes

I. NaCl (aq) + CuSO4 (aq) -------> No Reaction.
All products are soluble.

II. NaCl (aq) + AgNO3 (aq) -------> NaNO3 (aq) + AgCl (s)
Shiny silver chloride precipitates

III. 2NaCl (aq) + Pb(NO3)2 (aq) -------> 2NaNO3 (aq) + PbCl2 (s)
lead (II) chloride precipitates

IV. 2NaOH (aq) + CuSO4 (aq) -------> Na2SO4 (aq) + Cu(OH)2 (s)
gelatinous blue copper (II) hydroxide precipitates

V. NaOH (aq) + AgNO3 (aq) -------> NaNO3 (aq) + AgOH (s)
grey silver hydroxide precipitates

VI. 2NaOH (aq) + Pb(NO3)2 (aq) -------> 2NaNO3 (aq) + Pb(OH)2 (s)
Dull gray lead (II) hydroxide precipitates