Chemical Mixture, Using Filtration And Evaporation

1630 WordsOct 13, 20147 Pages
Introduction The objective of this lab will be to proficiently separate a mixture, using filtration and evaporation. In this lab, a homogeneous mixture will be created, along with a heterogeneous mixture.The two mixtures will be mixed together, yet separated. Common substances will be mixed and then separated using two of the techniques already listed; filtration and evaporation. Theory If the salt, sand, and water mixture is separated successfully through filtration and evaporation, then the percent recovery of the salt and sand will be 100%. Salt, sand, and water are each substances that are made up of 2 or more elements chemically combined, or compounds. When mixing compounds, it can be either a homogeneous mixture or a heterogeneous…show more content…
This will let the filtrate through but leave the sand behind. The filtrate is the liquid that passes through the funnel during filtration. In this experiment, the saltwater solution is the filtrate. The solution remaining in the beaker will then be heated over a Bunsen burner. As the solution is being heated, the water in the saltwater solution will evaporate off until only the salt is remaining in the beaker. Evaporation is a process where a soluble solid is separated from a liquid. The lab ends with the sand on the filter paper, and the salt remaining in the beaker. In order to successfully reach the objective of the lab, the amount of each substance that is being separated must stay consistent from start to finish. The amount of each substance before it is added to the mixture and after it has been separated needs to be recorded so that comparison and analysis will be correct. All of the data will be used to calculate the percent recovery of the sand and the salt. To find percent recovery, the following equation used will be: % Recovery = Amount of the substance recovered Original amount of the substance x 100 The answer will then show if separating the mixture was successful, and in turn completing the lab and objective. Materials 150 mL beaker Oven 250 mL beaker Bunsen burner Stirring rod Wire gauze Ring stand Electronic balance Iron ring Sand (SiO2) Filter paper Salt (NaCl) 2 spoons Ceramic fiber square Funnel Clay triangle
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