CH 116 acid content of soda

CH 116 acid content of soda - Acid Content of Commercial...

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Acid Content of Commercial Soda 1. Experimental Procedure First, standardize the NaOH by dissolving x amount of KHP into 50 mL of water. Add a few drops of phenolphthalein to the KHP solution. Fill a 50 mL buret with NaOH and add it to the KHP in small increments until the solution stays a very light shade of pink. Note the amount of NaOH used to titrate the solution. Repeat this procedure with two other amounts of KHP. Use this data to determine the molarity of the NaOH (see part two for calculations). To determine the acid content of the soda, heat the soda for 15 minutes to remove the bubbles. Note the volume of soda before heating (100 mL) and replace the lost volume from heating with water. Divide the soda into three different beakers, for example 50 mL, 25 mL, and 25 mL. Add a few drops of phenolphthalein to each beaker. Titrate the soda using NaOH until the soda stays a very light pink. Note the volume of NaOH used. Use this data to calculate the molarity of the citric acid (see part two for calculations).
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CH 116 acid content of soda - Acid Content of Commercial...

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