Why did you only titrate the aqueous layer during the experiment? (my experiment about the extraction)
Could you have titrated the organic layer to figure out the distribution coefficients and other data? Why or why not?
Reading assignment (from Organic Chemistry Laboratory Techniques, 2 ed) Sections 4.1 (Overview), 4.2 (Uses), 4.3 (Layers), 4.4 (Theory): pp. 203- 214 Section 4.5.A (Single Extraction Step-by-step): pp. 215-220 Section 4.5.B (Single Extraction Summary): p. 221 Section 4.5.C (Multiple Extractions): pp. 222-224 Intended Learning Outcomes 1. To learn the general uses of extraction 2. To learn how to "work up" a reaction mixture by selective removal of 3. To understand how the density of the solvents determines "which layer is 4. Memorize which common organic solvents are more dense that water 5. To understand the basics of extraction theory and be able to calculate the components which." (hint: there is only 2) partition coefficient (also called the distribution coefficient, Kb) Introduction Using simple and multiple extraction techniques, you will extract acetic acid (abbreviated HOAc) from an aqueous solution by use of organic solvents: diethyl ether (Et O) and dichloromethane (DCM). After you first determine the initial concentration of acetic acid in the aqueous solution via titration, you will extract the acid by use of organic solvents, and then determine how much acetic acid remained in the water layer via titration. You will then be able to compare the extraction abilities and distribution coefficients of ether and dichloromethane in a simple (single) extraction, as well as the relative efficiency of a single versus a multiple extraction Before Lab Calculate the approximate molarity of a 5% (v/v) acetic acid stock solution Estimate the volume of 0.15M NaOH that would be required to titrate 5.00 mL of the stock solution to the end point.
