7.03 pH - 7.03 pH By Heather Owens Part I Data and Observations Part II Data and Observations Calculations 1 Determine the volume of sodium hydroxide

# 7.03 pH - 7.03 pH By Heather Owens Part I Data and...

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7.03 pH By: Heather Owens
Part I Data and Observations
Part II Data and Observations
Calculations 1. Determine the volume of sodium hydroxide added to the flask from the buret. – 50 mL – 30 mL = 20 mL Since the initial volume was 50 mL, you would subtract that from the end volume which was 30 mL. 2. Calculate the molarity of the Hydrochloric acid in the flask. pH = -log [H3O+] H+ = -log [-0.30] H+ = -0.5228 You start by plugging in the pH then solve using log.
Conclusion 1. Describe the graph of pH values over the course of the reaction in Part II. Was the change in pH consistent over the course of the reaction? Do your best to explain the reason for the shape of the pH curve in your own words. Increasing the amount of the base dilutes the acid resulting in a less acidic reaction. In this case, the NaOH is the base and HCl is the acid. As the NaOH was added, the pH increased.

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• Fall '16
• Brent LeDrew
• English, pH, Sodium hydroxide, Heather Owens

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