1 05 l 006 m grams of acetic acid 0028 mol 1 60052 g

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1 .05 L = 0.06 M Grams of Acetic acid 0.028 mol. 1 × 60.052 g. 1 mol. = 1.7 g. H C 2 H 3 O 2
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Owen Kulp Period: 2 Academic Chemistry 11 Partners: Phoebe Jenkins, Isabella Pizzelanti Mass of Vinegar 1.009 g. 1 mL × 50 mL = 50.45 g.vinegar Mass percent of acetic acid 1.7 g 50.45 g. × 100 = 3.3% Results Average Molarity of Titrant .0016 M Moles of Acetic acid 0.0028 mol Molarity of acetic acid 0.6M Mass of acetic acid 0.17 g. Mass of Vinegar 50.45 g. Percent mass of Acetic Acid 3.3% Conclusion Titration is a process by which a solution of known concentration, known as the titrant, is added via a burette to a volume of another solution that is of an unknown concentration. This process is done to help the solution reach the equivalence point, or the point where the solution is neutral, and no reactants are present in excess. This solution is known as the analyte, due to the fact that it is being measured and identified throughout the titration process. This type of titration is an acid-base neutralization, where the titration process is used to analyze how acidic or basic a solution is by adding a titrant to an already acidic or basic solution. The products of these reactions are water and a form of soluble salt. Within this particular experiment, the titrant will be the sodium hydroxide, and the analyte will be the acetic acid present in vinegar. This experiment will also be graphed through LoggerPro in order to help identify the end point, or point in which the reaction of the titrant and analyte is complete. In order to properly titrate the vinegar, the titrant must first be standardized, or tested against a 100% pure substance in order to confirm the molarity of the titrant solution. The way this is tested is by adding titrant until equivalence point, or the point in which the titrant added is enough to completely neutralize the analyte. In this experiment, the standard is a 100% pure solution of potassium hydrogen phthalate. In order to standardize, a pH indicator must be added to the solution, where the end point can be found once a slight permanent change in color can be identified. Once this is done multiple times in order to calculate an average molarity, the titration itself can begin. Once the correct volume of vinegar is collected and the stir rod is in place, the titration process can begin. The necessity of the stir rod is in order to make sure that the titrant is equally spread throughout the vinegar solution to confirm the pH change of the entire solution as opposed to waiting for the dispersion of the titrant naturally. The addition of titrant in small increments is necessary to get accurate pH measurements and allow for the pH to stabilize in order to record the measurement
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Owen Kulp Period: 2 Academic Chemistry 11 Partners: Phoebe Jenkins, Isabella Pizzelanti as accurately as possible. The graph that is created will end up going past the end point and equivalence point and continue to make the solution basic, just to express what happens when the titrant concentration exceeds that of the analyte, changing the pH of the solution drastically. The
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