Lab Report Exp 3

Lab Report Exp 3 - Jan-Kristine Bayabo Determination of the...

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Jan-Kristine Bayabo Determination of the Molarity of a Strong Acid Experiment Chem 1A Section 450 September 24, 2008 Title: Titration of TRIS Enables Calculations for Concentrations of a Solution of Hydrochloric Acid Purpose: The purpose of this experiment is to figure out the concentration of an acid solution through analytical techniques and the use of stoichiometry. Methods : 5 mL of hydrochloric acid was diluted in a volumetric flask and was poured in a buret. The 25 mL buret was used to contain the hydrochloric acid for titration. TRIS was diluted in a 250mL Erlenmeyer flask. An average of .2296g of TRIS was diluted in the flask. 4 drops of bromocresol green indicator was added to the TRIS solution initially displaying a blue color. Using the buret device, an average of 19.63 mL of HCl solution was slowly added to the TRIS until the TRIS turned a green color. The green color tells that the acidic solution of HCl is in equilibrium with the basic solution of TRIS.
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