Lab #5 – Green Chemistry Analysis of a Mixture Objective: Determine the relative amounts of a metal carbonate and metal bicarbonate in a mixture of the two solids in terms of their mass percent in the overall mixture. Background: You must choose the mixture in which the atom economy for the reaction is greater. Your choices are a mixture of potassium carbonate/potassium bicarbonate or a mixture of sodium carbonate/sodium bicarbonate. Upon heating the mixture gently, the bicarbonate will decompose into the metal carbonate, water, and carbon dioxide. The metal carbonate in the mixture will not decompose when heated gently. It is the decomposition reaction of the bicarbonate that you will use to determine the atom economy of each reaction. Caution: The reactions are not likely to go to completion. Therefore, to get an accurate assessment of the amounts in the original mixture, you will need to determine the percent yield of the decomposition reaction. The same percent of your bicarbonate should decompose when it is part of a mixture as when it is pure. Lab report: Be sure that your lab report includes a title and date, an objective, a procedure/raw data, an analysis/calculations, and a conclusion section. The report can be submitted electronically, or written in your lab notebook and handed in.