ollowing data. 212.9 mg of naproxen was weighed and dissolved in a mixture of 25 ml of water and 75 ml methanol. It was titrated with 0.1024 M sodium hydroxide solution, using 1 ml of phenolphthalein solution as indicator. 8.08 mL of sodium hydroxide was required to neutralize the solution. Record your answer in decimal notation to 2 decimal

ollowing data. 212.9 mg of naproxen was weighed and dissolved in a mixture of 25 ml of water and 75 ml methanol. It was titrated with 0.1024 M sodium hydroxide solution, using 1 ml of phenolphthalein solution as indicator. 8.08 mL of sodium hydroxide was required to neutralize the solution. Record your answer in decimal notation to 2 decimal

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter10: Fuels, Organic Chemicals, And Polymers

Section: Chapter Questions

Problem 115QRT

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An aliquot of 20 ml of skim milk was placed in an Erlenmeyer flask. To the flask was added 3 to 4 drops of phenolphthalein. The sample was titrated in triplicate using a previously standardized NaOH solution 0.101M. The volumes of NaOH spent in the three experiments to reach chemical equivalence were 3.6ml, 3.7ml and 3.5ml. 1) Express the acidity of milk in g/L of lactic acid. 2) Assuming that the only acid present in milk is lactic acid, would you expect the pH corresponding to the equivalence point was 7?.
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100.0 mL of a natural water sample was titrated with NaOH. 12.49 mL of 0.1347 M NaOH solution was required to titrate the water sample to a light pink phenolphthalein endpoint. Calculate the number of millimoles of NaOH required for the titration.
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