6038kis Student 1 Spring 2017, Dr. Taylor/Dr. Holley A Print B Calculator Period
ID: 490137 • Letter: 6
Question
6038kis Student 1 Spring 2017, Dr. Taylor/Dr. Holley A Print B Calculator Periodic Tabl estion 20 of 25 (1 point) KMnO4 heat OH CH3 Use UV-vis, the product would show an absorbance at a longer Ama from that of the starting material. Use UV-vis, the product would show an absorbance at a shorter Amex from that of the starting material. UV-vis will not be useful as no change in Amax would occur. O Use IR; the starting material has a strong broad peak at 3000-3300 cm but the product does not. Use IR: the product has a strong broad peak at 3000-3300 cm .but the starting material does not. use IR; the starting material has a strong peak at 1700 cm-1, but the product does not. Use IR; the product has a strong peak at 1700 cm but the starting material does not. IR will not be useful as no detectable change in the spectrum will occur Check Answer Hint 19 20 21 22 23 24 25 Progress Ext Activity Activity Grade: 25 Polnts Possible Started: Tuesday, February 28, 201 08:07 PM Recorded:Explanation / Answer
(a) Use, UV - vis, the product would show an absorbance at a longer wave length from that of the starting material.
(e) Use: IR, the product has a strong broad peak at 3000 - 3300 cm-1 but the staring material does not. Because in product the conjugation is extended from benzene ring to carbonyl group, which cause the absorption of UV light at onger wave lengths.
Because product has - OH group which cause intermoleuclar hydrogen bonding that give a peak at 3000 - 3300 cm-1.
(g) Use IR: the product has a strong peak at 1700 cm-1 but starting material does not. Because Produt has - CO - group which shows a peak at 1700 cm-1.
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