. For "II. Reaction of an alcohol with dichromate ion," the reaction shown is the conversion of the dichromate ion to chromium (III) aqueous. At the same time, ethanol (CH3CH2OH or C2H6O) is converted to acetaldehyde (C2H,O). a. Write the balanced half-reaction under acidic conditions for the dichromate ion. Is the process oxidation or reduction? b. Write the balanced half-reaction under acidic conditions for the ethanol. Is the process oxidation or reduction?

. For "II. Reaction of an alcohol with dichromate ion," the reaction shown is the conversion of the dichromate ion to chromium (III) aqueous. At the same time, ethanol (CH3CH2OH or C2H6O) is converted to acetaldehyde (C2H,O). a. Write the balanced half-reaction under acidic conditions for the dichromate ion. Is the process oxidation or reduction? b. Write the balanced half-reaction under acidic conditions for the ethanol. Is the process oxidation or reduction?

General Chemistry - Standalone book (MindTap Course List)

11th Edition

ISBN:9781305580343

Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Chapter24: Polymer Materials: Synthetic And Biological

Section: Chapter Questions

Problem 24.79QP

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During our Laboratory session for Organic chemistry, we were tasked to do a Bromine's test for hydrocarbons. We used 2% Br in CCl4. The samples were: A. Kerosene B. Heptane C. Toluene D. Xylene E. Unknown F. Corn Oil The result is shown in the attached picture. Based on other references, the result should either be a colorless or an orange/brownish solution. However, based on our result, there seems to be a formation of other compounds in some samples. My question is, what is the yellow precipitate-like product in sample A when Bromine was added and the yellow layer at the top of sample F? Could you give the different chemical equations that show the reaction in each sample when Br is added?
1. Why is the KMnO4 solution filtered? KMnO4 doesn't need to be filtered prior to use. Most commercial samples of KMnO4 contain some manganese dioxide that must be removed prior to use to avoid further decomposition. KMnO4 is very stable, but the unstable ions in the commercial packaging materials must be removed prior to use. Most commercial samples contain inorganic matter that will react slowly with the KMnO4 and cause its decomposition. 2. Why is the KMnO4 not stored in a rubber-stoppered bottle? Rubber doesn't make a good seal with the plastic bottles in which permanganate is usually stored. Rubber is made of inorganic matter and will reduce the permanganate solution. Rubber is made of organic matter and will reduce the permanganate solution. Rubber can oxidize the permanganate solution.
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General Chemistry - Standalone book (MindTap Cour…

Chemistry

ISBN:

9781305580343

Author:

Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:

Cengage Learning