chemistry_pigments malachite 3r eso
TRANSCRIPT
Synthetic Malaquite
(Basic Copper Carbonate)
Marc Caballer Gil ArassaScience 3r ESO
Preparation
1-CuSo45 H2O
2-NaHCO3
First step
Measure out 5 mL of a 0.5 M solution of copper sulfate (CuSO45 H2O) into a small beaker.
Second step
Add about 5mL of solid sodium bicarbonate (NaHCO3), a little at a time with stirring until all the fizzing has stopped and the reaction is complete.
Third Step
Filter the precipitate of basic coopeer carbonate-CuCo3Cu(OH)2- that has formed.
Fourth Step
Allow the pigment to dry uncovered on the filter paper on your bench until next week.
The final result is this.