One of your classmates (or you, perhaps!) forgot to add phenolphthalein indicator before starting the titration, and he/she already began adding sodium hydroxide from the buret! Uh oh...what should be done? a) Just restart. The trial is completely ruined. b) Add a couple drops of phenolphthalein into the acid flask. If it remains clear, nothing's wrong. If it changes to dark pink, record the final buret reading and call it
One of your classmates (or you, perhaps!) forgot to add phenolphthalein indicator before starting the titration, and he/she already began adding sodium hydroxide from the buret! Uh oh...what should be done? a) Just restart. The trial is completely ruined. b) Add a couple drops of phenolphthalein into the acid flask. If it remains clear, nothing's wrong. If it changes to dark pink, record the final buret reading and call it
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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One of your classmates (or you, perhaps!) forgot to add phenolphthalein indicator before starting the titration, and he/she already began adding sodium hydroxide from the buret! Uh oh...what should be done?
a) Just restart. The trial is completely ruined.
b) Add a couple drops of phenolphthalein into the acid flask. If it remains clear, nothing's wrong. If it changes to dark pink, record the final buret reading and call it a successful trial.
c) Add a couple drops of phenolphthalein into the buret to turn the sodium hydroxide solution dark pink. That will really make your instructor happy.......right?
d) Add a couple drops of phenolphthalein into the acid flask. If it remains clear, nothing's wrong. If it changes to dark pink, I guess you need to restart!
e) Add a couple drops of phenolphthalein into the acid flask just for the heck of it. You need to restart anyways, but why not have some fun?
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