In an erlenmeyer flask, prepare a quench mixture of 10 ml 10% sulfuric acid and about 10 grams of ice. carefully pour the reaction mixture into the flask containing the quench solution. rinse the reaction flask with some ether and 10% sulfuric acid and add these rinses to the erlenmeyer flask. swirl the mixture well and then transfer the solution to a separatory funnel. add enough ether to allow for a reasonable extraction. separate the layers and wash the organic layer with 10% sulfuric acid and then brine. be careful during these washes as pressure will build up quickly since ether is very volatile. be sure to vent the separatory funnel right away and frequently thereafter. dry the organic layer over magnesium sulfate, filter, and concentrate on the rotovap. consider all the possible molecular species that could be present at the end of this reaction. next, analyze the isolation procedure described to predict which species are in the aqueous and organic layers. in most cases you will observe (by tlc of your crude product) that you have unreacted methyl benzoate present. in many cases the amount of unreacted starting material is significant. if this is the case, you will be required to purify your product. what purification methods are available to you in this case? which one would be the most effective? which would be the fastest?