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Q3. Distinguish using IR spectroscopic assignments between 4-methyl-2-pentanone and 4-methyl-3- penten-2-one. (5 marks)

Q3. Distinguish using IR spectroscopic assignments between 4-methyl-2-pentanone and 4-methyl-3- penten-2-one. (5 marks)

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Answer #1

For 4-methyl-3-pentene-2-one we will get 1 peak at 3050 cm-1 for SP2 C-H stretching, but for 4-methyl-2-pentanone we will not get any IR peak at above 3000 cm-1.

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Q3. Distinguish using IR spectroscopic assignments between 4-methyl-2-pentanone and 4-methyl-3- penten-2-one. (5 marks)
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