(a) Kiyah adds 10 mL of hydrochloric acid to the reaction solution, tests the pH, and observes a yellow-green color on her pH paper. She then adds 5 mL of hydrochloric acid to her solution, tests the pH, and observes a dark red color on her pH paper. She isolates her pure vanillyl alcohol, and notes that her yield is lower than her classmates. i. Explain the reason behind Kiyah's lower yield from the scenario above. ii. iii. Molecularly, why does this happen? The work up step is a critical step in synthesizing and isolating vanillyl alcohol. What is a good indicator to stop adding hydrochloric acid?

(a) Kiyah adds 10 mL of hydrochloric acid to the reaction solution, tests the pH, and observes a yellow-green color on her pH paper. She then adds 5 mL of hydrochloric acid to her solution, tests the pH, and observes a dark red color on her pH paper. She isolates her pure vanillyl alcohol, and notes that her yield is lower than her classmates. i. Explain the reason behind Kiyah's lower yield from the scenario above. ii. iii. Molecularly, why does this happen? The work up step is a critical step in synthesizing and isolating vanillyl alcohol. What is a good indicator to stop adding hydrochloric acid?

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter4: Recrystallization

Section: Chapter Questions

Problem 1Q

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