• 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. Report the ackdity of vinegar as percantage (w/v) CH,COOH (60.053g.mol). Titration Initial volume (ml) final volume (ml) Volume used (nl)? 1 0,75 25.50 2 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.
• 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. Report the ackdity of vinegar as percantage (w/v) CH,COOH (60.053g.mol). Titration Initial volume (ml) final volume (ml) Volume used (nl)? 1 0,75 25.50 2 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.
Chapter16: Applications Of Neutralization Titrations
Section: Chapter Questions
Problem 16.20QAP
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