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Unformatted text preview: Allison Hall Molarity of Acids Lab Abstract In this lab I attempted to determine the molarity of an unknown acid using titration. To do this, I diluted the base NaOH to approximately .1 M. Then I created a solution of the unknown acid and added universal indicator. Finally, I titrated the base with the acid and determined the molarity by recording the amount of base needed to reach neutral pH and calculating from there. I discovered that the acid has a molarity of .3069 after repeating this process for three precise t rials. Introduction I am performing an acid base titration in order to determine the molarity of the acid with a known concentration of base. The experiment will give me the volume of base needed to neutralize the acid. Using this value, I can moles of acid needed and from there the molarity of the acid. Using a universal indicator, I know the acid will turn green as soon as the solution is no longer acidic, but neutral. Using this fact I can find the amount of base used to neutralize my unknown acid. I will repeat this for three t rials with precision of less than 4% between trials. This ensures that if my value is not accurate, I am at least getting similar results for each trial. Since I know nothing about the acid, I cant make more than an arbitrary guess as to what the amount of base needed to neutralize the solution will be.an arbitrary guess as to what the amount of base needed to neutralize the solution will be....
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