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Hydrolysis of an Ester
Member rating: No Rating | Words: 500 | Submitted: Fri Feb 29 2008
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Hydrolysis of an Ester Aim: To hydrolyse the ester methyl benzoate to produce benzoic acid and to calculate the yield of the procedure and its melting point. Equation: C6H5COOCH3 + OH- C6H5COO- + CH3OH C6H5COO- + H+ C6H5COOH Apparatus: * 50cm3 round bottomed flask * Three 10cm3 measuring cylinders * Anti-bumping granules * Water filled condenser and rubber tubing * Bunsen burner * Stand and Clamp * Gauze and Tripod * 250cm3 and 100cm3 beakers * Spatula * Stirrer Procedure: 1. I measured 2.0cm3 of methyl benzoate, then 10cm3 of ethanol and 10cm3 of 2.0 moldm-3 sodium hydroxide into a 50cm3 round bottomed flask containing anti-bumping granules using three 10cm3 measuring cylinders. 2. I attached a condenser to the top of the flask and heated the contents gently until they boiled. I then refluxed the contents for 15 minutes. 3. I allowed the flask to cool and poured the solution slowly into a beaker leaving the anti-bumping granules in the flask. I added 10 drops of methyl orange indicator...
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