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If the unknown is vinegar (Note 1), pipet 25.00 mL into a 250 mL volumetric flask and dilute to the mark with distilled water. Mix thoroughly and pipet 50,00 mL aliquots into 250 mL conical flasks, Add about 50 mL of water and 2 drops of phenolphthalein (Note 2) to each, and titrate with standard 0,1 M NaOH to the first permanent (30 seconds) pink color, Raport the acidity of vinegar as percantage (w/v) CHCOOH (60,053g.mol).

If the unknown is vinegar (Note 1), pipet 25.00 mL into a 250 mL volumetric flask and dilute to the mark with distilled water. Mix thoroughly and pipet 50,00 mL aliquots into 250 mL conical flasks, Add about 50 mL of water and 2 drops of phenolphthalein (Note 2) to each, and titrate with standard 0,1 M NaOH to the first permanent (30 seconds) pink color, Raport the acidity of vinegar as percantage (w/v) CHCOOH (60,053g.mol).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Use the data in the attached pictures to determine the % error.

If the unknown is vinegar (Note 1), pipet 25.00 mL into a 250 mL volumetric flask and dilute to the mark with distilled water. Mix thoroughly and pipet 50,00 mL aliquots into 250 mL conical flasks, Add about 50 mL of water and 2 drops of phenolphthalein (Note 2) to cach, and titrate with standard 0,1 M NaOH to the first permanent (30 seconds) pink color, Raport the acldity of vinegar as percentage (w/v) CH;COOH (60.053g.mol). Titration Initial volume (ml) final volume (ml) Volume used (ml)? 1 0,75 25.50 1,25 26.05 3. 1.75 25.99 4 2,55 27.87 5. 1.90 26.97 Calculate the concentration or acid content of vinegars in grams per litter.
Transcribed Image Text:If the unknown is vinegar (Note 1), pipet 25.00 mL into a 250 mL volumetric flask and dilute to the mark with distilled water. Mix thoroughly and pipet 50,00 mL aliquots into 250 mL conical flasks, Add about 50 mL of water and 2 drops of phenolphthalein (Note 2) to cach, and titrate with standard 0,1 M NaOH to the first permanent (30 seconds) pink color, Raport the acldity of vinegar as percentage (w/v) CH;COOH (60.053g.mol). Titration Initial volume (ml) final volume (ml) Volume used (ml)? 1 0,75 25.50 1,25 26.05 3. 1.75 25.99 4 2,55 27.87 5. 1.90 26.97 Calculate the concentration or acid content of vinegars in grams per litter.
Drye quantity of primary standard potassium hydrogen phthalate (0HP) for about 2 heat 110°C (Fig 35-9), and cool in a desiccator. Weigh individual 0,7 to 0.8 g samples (to the nearest 0.Img) into 250 i conical flasks, and dissolve each in 50 to 75 mL of distiled water. Add 2 drops of phenolphthalein; titrate with base until the pink colour of the indicator persists for 30 seconds (Note). Calculate the concentration of the NaOH solution, 07624 g Velume ced (n)? Mass of KHP Initial volume () find volume (ml) 50 25 50 75 Titration 0 75 125 175 49 87 2 55 51 05 190 49 90 Calculate the concentration of the NaOH solution
Transcribed Image Text:Drye quantity of primary standard potassium hydrogen phthalate (0HP) for about 2 heat 110°C (Fig 35-9), and cool in a desiccator. Weigh individual 0,7 to 0.8 g samples (to the nearest 0.Img) into 250 i conical flasks, and dissolve each in 50 to 75 mL of distiled water. Add 2 drops of phenolphthalein; titrate with base until the pink colour of the indicator persists for 30 seconds (Note). Calculate the concentration of the NaOH solution, 07624 g Velume ced (n)? Mass of KHP Initial volume () find volume (ml) 50 25 50 75 Titration 0 75 125 175 49 87 2 55 51 05 190 49 90 Calculate the concentration of the NaOH solution
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