Determination of Acetic Acid Concentration in Vinegar Using Titration are

Determination of acetic acid concentration in vinegar

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Determination of Acetic Acid Concentration in VinegarUsing Titrationare labeled with quantities and descriptions. Laboratory Questions 1.Based on the experimental data, what is the molarity of the vinegar tested? Howdoes this value compare with those determined in the pre-lab questions? 2.List at least two possible sources of error from the experiment. Would these errors result in an overestimation or an underestimation of the concentration of acetic acid in the vinegar. Discussion Questions 1.Describe on a molecular level the difference between two titrations—one, of a strong acid with a strong base and the other, of a weak acid with a strong base. Draw a titration curve for each situation to further illustrate the differences between strong and weak acids. Calculate Concentration of Acid in Vinegar SamplesA sample of 10.0 mL of HCl unknown concentration is titrated to the endpoint with 6.2 mL of a 1.0 M NaOH sample. Calculate the concentration of hydrochloric acid. Write out balanced chemical equation HCl + NaOHH2O + NaCl Determine the moles of sodium hydroxide used to reach the endpoint. Moles of NaOH= 1.0 M X 6.2 mL x 1 L / 1000
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  • Summer '16
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  • Chemistry, pH, Sodium hydroxide, Carolina Biological Supply

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