Precipitates: When Do They Form? Background Information What would happen if two aqueous solutions of different ionic compounds were mixed? A double replacement reaction is a reaction between two aqueous compounds in which one component from each of the compounds exchange to form a precipitate. A precipitate is a resulting solid from the mixing of two aqueous compounds that react with each other. This experiment was performed to show the process of double replacement reactions and to explain when it experimentally occurs. To help display this, two aqueous solutions selected from a pool of many are mixed to demonstrate whether they react or not. This helps one deepen their understanding of double replacement reactions because by experimenting …show more content…
There must also be a way to be able to wash out the compartment container (e.g. a sink). Procedure 1. Put on safety goggles before touching anything to prevent any eye injuries. 2. Mix barium chloride (BaCl2) and potassium nitrate (KNO3) by putting 2-3 drops of each into a compartment in the compartment container. 3. Observe the result and mark down any important details or happenings. 4. Wash out compartment container to mix 2 other compounds. 5. Repeat steps 2-4 for the following compounds: barium chloride (BaCl2) and silver nitrate (AgNO3), potassium nitrate (KNO3) and silver nitrate (AgNO3), potassium nitrate (KNO3) and calcium sulfate (CaSO4), sodium carbonate (Na2CO3) and calcium sulfate (CaSO4), sodium carbonate (Na2CO3) and potassium nitrate (KNO3), sodium phosphate (NA3PO4) and silver nitrate (AgNO3), sodium phosphate (NA3PO4) and potassium nitrate (KNO3), sodium phosphate (NA3PO4) and barium chloride (BaCl2), sodium phosphate (NA3PO4) and potassium nitrate (KNO3) again, barium chloride (BaCl2) and sodium carbonate (Na2CO3), barium chloride (BaCl2) and calcium sulfate (CaSO4), silver nitrate (AgNO3) and sodium carbonate (Na2CO3), …show more content…
After all observations have been recorded, wipe off the area of any chemical residue or spillages with the paper towel. Safety Notes -General There are a number of hazards in this particular lab, so safety precautions are necessary. Safety goggles must be put on before touching any of the materials to ensure eye protection. When conducting the experiments, be sure not to make touch, smell, or taste any of the chemical solutions, which may result in sickness. Do not stand directly above the compartment container when mixing the aqueous solutions, as it may cause a reaction including but is not limited to: an explosion, emission of hazardous gas, or extreme temperatures. -MSDS -Barium Chloride