recrystillization - Dominic Grimberg Lab Report #1:...

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Dominic Grimberg Lab Report #1: Recrystillization TA: Meagan Hinze
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1. Introduction The purpose of this experiment was to extract pure benzoic acid crystals from a minimum amount solution of benzoic acid in boiling water containing 5% salicylic acid. 2. Results: Part A: The crystals were extracted from minimum solution via gravity filtration, 20 minutes cooling at room temperature, 20 minutes in an ice bath, and vacuum filtration, followed by 20 minutes in an oven to evaporate any excess water. Melting Point Range 118-123 ° C Theoretical Yield Beginning with 1.01g Benzoic Acid containing 5% Salicylic Acid, the projected mass of the crystals was: Percent Yield Part B: Method i: The crystals were extracted from minimum solution via gravity filtration, the two stage cooling process, and vacuum filtration, followed by 20 minutes in an oven to evaporate any excess water. (Same procedure as part A) Melting Point Range 121.0-123.9 ° C Theoretical Yield Percent Yield (1) Method ii: The crystals were extracted from 100 mL solution via gravity filtration, two 20-minute cooling processes, and vacuum filtration, followed by 20 minutes in an oven to evaporate any excess water. Melting Point Range
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recrystillization - Dominic Grimberg Lab Report #1:...

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