CitEnn 04, 101 Practice Name 1. Which ketone will show a carbonyl absorption at

Question

CitEnn 04, 101 Practice Name 1. Which ketone will show a carbonyl absorption at the lowest frequency (cm) in the infrared? 3. Which is the most reasonable structure for a compound with this IR spectrum? (CA) CH (CH2)4-CH-CH-CH 2. Which compound is consistent with this IR spectrum? 4. Which structure is consistent with this BR 4000 3500 3000 2500 2000 1800 1600 1400 12001000 B00 600400 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 800 400 0 CH,CH CH,CCH CH;CH CH CH CH CH CH CH-CHCH3 CHyCH CH CH,COCH 0 CH3(CH2hoCOH CH(CH CH HOCH2(CH2)0CH3 OH 0 0 0

Explanation / Answer

1= answer is b part (because pi bond in conjugation with the corbonyl group )

2=answer is c part

3=answer is c part ( because ketone show peak at 1700)

4=answer is b part (because acid show peak like this between 3300 to 2400)

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