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Buffer Lab Methods & Results Methods Four test tubes were labeled A through D, with 5 mL of distilled water placed in test tubes A and B, and 5 mL of a buffer solution placed in test tubes C and D. Using separate strips of pH paper, the pH of each test tube was determined. After the initial observations, 5mL of 0.1M hydrochloric acid was added to test tubes A and C. The solutions were mixed and then the pH was tested. With test tubes B and D, 5 mL of 0.1M sodium hydroxide was added, mixed, and the resulting pH was tested. This procedure was then repeated substituting 0.1M acetic acid for the hydrochloric acid and 0.1M ammonium hydroxide for the sodium hydroxide. Results Table 1- Initial pH Substance pH Water 7 Buffer solution 6. Table 2-pH of solution after the addition of an acid or base Solution pH Water and HCI Buffer and HCI Water and NaOH Buffer and NaOH Water and HC,H.O. Buffer and HOНО. Watcr and NHLOH Buffer and NILOI 12 11 4. 6. 10

Buffer Lab Methods & Results Methods Four test tubes were labeled A through D, with 5 mL of distilled water placed in test tubes A and B, and 5 mL of a buffer solution placed in test tubes C and D. Using separate strips of pH paper, the pH of each test tube was determined. After the initial observations, 5mL of 0.1M hydrochloric acid was added to test tubes A and C. The solutions were mixed and then the pH was tested. With test tubes B and D, 5 mL of 0.1M sodium hydroxide was added, mixed, and the resulting pH was tested. This procedure was then repeated substituting 0.1M acetic acid for the hydrochloric acid and 0.1M ammonium hydroxide for the sodium hydroxide. Results Table 1- Initial pH Substance pH Water 7 Buffer solution 6. Table 2-pH of solution after the addition of an acid or base Solution pH Water and HCI Buffer and HCI Water and NaOH Buffer and NaOH Water and HC,H.O. Buffer and HOНО. Watcr and NHLOH Buffer and NILOI 12 11 4. 6. 10

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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Buffer Lab Methods & Results Methods Four test tubes were labeled A through D, with 5 mL of distilled water placed in test tubes A and B, and 5 mL of a buffer solution placed in test tubes C and D. Using separate strips of pH paper, the pH of each test tube was determined. After the initial observations, 5mL of 0.1M hydrochloric acid was added to test tubes A and C. The solutions were mixed and then the pH was tested. With test tubes B and D, 5 mL of 0.1M sodium hydroxide was added, mixed, and the resulting pH was tested. This procedure was then repeated substituting 0.1M acetic acid for the hydrochloric acid and 0.1M ammonium hydroxide for the sodium hydroxide. Results Table 1- Initial pH Substance pH Water Buffer solution Table 2-pH of solution after the addition of an acid or base Solution pH Water and HCI Buffer and HCI Water and NaOH Buffer and NaOH Water and HCH.O, Buffer and HC,H,O, Water and NHLOH Buffer and NILOIH 12 11 4. 6. 10 8.
Transcribed Image Text:Buffer Lab Methods & Results Methods Four test tubes were labeled A through D, with 5 mL of distilled water placed in test tubes A and B, and 5 mL of a buffer solution placed in test tubes C and D. Using separate strips of pH paper, the pH of each test tube was determined. After the initial observations, 5mL of 0.1M hydrochloric acid was added to test tubes A and C. The solutions were mixed and then the pH was tested. With test tubes B and D, 5 mL of 0.1M sodium hydroxide was added, mixed, and the resulting pH was tested. This procedure was then repeated substituting 0.1M acetic acid for the hydrochloric acid and 0.1M ammonium hydroxide for the sodium hydroxide. Results Table 1- Initial pH Substance pH Water Buffer solution Table 2-pH of solution after the addition of an acid or base Solution pH Water and HCI Buffer and HCI Water and NaOH Buffer and NaOH Water and HCH.O, Buffer and HC,H,O, Water and NHLOH Buffer and NILOIH 12 11 4. 6. 10 8.
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