Tag: stoichiometry

Synthesis of the copper pigment malachite: making tempera paint

Students synthesize the copper pigment malachite, then use the pigment to prepare egg tempera paint. Students explore "stoichiometry (excess reactants and yields), solubility, precipitation, and properties of emulsions" in this Journal of Chemical Education article by Sally D. Solomon, Susan A. Rutkowsky, Megan L. Mahon, and Erica M. Halpern. The first half of this experiment uses…

Determination of Percent by Mass of NaHCO3 in Alka-Seltzer Tablets

At home Hands-on Experiments

Use the (really fun!) reaction between the sodium bicarbonate in Alka-Seltzer tablets and vinegar to explore stoichiometry, percent composition, and limiting reactants. This experiment is easily and safely reproduced at home using household materials and this $12 balance. Students also gain experience with data manipulation, error analysis, and graphical presentation in Excel. This laboratory can be…