Question 3. The chromic acid test is intended to identify the presence of alcohol functionality on a molecule. If an oxidizable alcohol is present, the orange Cr*6 ion is reduced to Cr*³, resulting in a color change to blue-green (a positive test). However, several other functional groups can give results that at first seem “erroneous". a) The compound 2-methyl-2-butanol gives a negative chromic acid test. Clearly explain this result.
Question 3. The chromic acid test is intended to identify the presence of alcohol functionality on a molecule. If an oxidizable alcohol is present, the orange Cr*6 ion is reduced to Cr*³, resulting in a color change to blue-green (a positive test). However, several other functional groups can give results that at first seem “erroneous". a) The compound 2-methyl-2-butanol gives a negative chromic acid test. Clearly explain this result.
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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Transcribed Image Text:Question 3. The chromic acid test is intended to identify the presence of alcohol functionality on
a molecule. If an oxidizable alcohol is present, the orange Cr+6 ion is reduced to Cr*³, resulting in
a color change to blue-green (a positive test). However, several other functional groups can give
results that at first seem "erroneous".
a) The compound 2-methyl-2-butanol gives a negative chromic acid test. Clearly explain this
result.
b) The compound heptanal gives a positive chromic acid test. Clearly explain this result.
c) The epoxide shown below gives a positive chromic acid test. Clearly explain this result.
H3C.
`CH3
d) The acetal shown below gives a positive chromic acid test. Clearly explain this result.
OCH3
H3C.
OCH3
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