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1. Why does the tip of your buret need to be free of air bubbles?

1. Why does the tip of your buret need to be free of air bubbles?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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5) A student starts a titration without phenolphthalein in the Erlenmeyer flask. The student realizes the mistake and adds the phenolphthalein during the titration. Once the phenolphthalein is added, the solution in the Erlenmeyer flask remains colorlessCan the results of this titration be used? Concisely explain .
Questions: 1. Why does the tip of your buret need to be free of air bubbles? 2. Explain why the volume of water did not need to be exactly measured or recorded. 3. Define the endpoint of a titration. 4. What is a standard solution? Why is a standard solution necessary for titration? 5. A student starts a titration without phenolphthalein in the Erlenmeyer flask. The student realizes the mistake and adds the phenolphthalein during the titration. Once the phenolphthalein is added, the solution in the Erlenmeyer flask remains colorless. Can the results of this titration be used? Concisely explain. 6. Write a balanced equation for the neutralization of hydrobromic acid with potassium hydroxide. 7. What is the molarity of a 12.46 mL sulfuric acid solution if 18.22 mL of 0.100 M potassium hydroxide is required to reach the endpoint as indicated by a titration. 43
Transcribed Image Text:Questions: 1. Why does the tip of your buret need to be free of air bubbles? 2. Explain why the volume of water did not need to be exactly measured or recorded. 3. Define the endpoint of a titration. 4. What is a standard solution? Why is a standard solution necessary for titration? 5. A student starts a titration without phenolphthalein in the Erlenmeyer flask. The student realizes the mistake and adds the phenolphthalein during the titration. Once the phenolphthalein is added, the solution in the Erlenmeyer flask remains colorless. Can the results of this titration be used? Concisely explain. 6. Write a balanced equation for the neutralization of hydrobromic acid with potassium hydroxide. 7. What is the molarity of a 12.46 mL sulfuric acid solution if 18.22 mL of 0.100 M potassium hydroxide is required to reach the endpoint as indicated by a titration. 43
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