QUESTION 1 The peak to the left of 3000 cm-1 in the IR spectrum is indicative of

Question

QUESTION 1 The peak to the left of 3000 cm-1 in the IR spectrum is indicative of which functional group stretch? a sp3 Carbon hydrogen stretch b sp2 Carbon carbon stretch c sp2 Carbon hydrogen stretch d sp3 Nitrogen hydrogen stretch QUESTION 2 1 points Save Answer In the Carbon-13 spectrum of ethyl acetates, which carbon would be the farthest downfield? a carbonyl carbon b. carbon of the aromatic ring c. methyl carbon bonded to the methylene carbon d methyl carbon bonded to the carbonyl carbon QUESTION 3 1 points Save Answer How many peaks would you expect to see in the Carbon-13 spectrum of ethyl acetates? a. b. 4 c, 5 d. 6

Explanation / Answer

1. the peak to the left of 3000 cm-1 is indicative of,

c. sp2 carbon-hydrogen stretch

2. for ethyl acetate, the most downfield carbon would be,

a. a carbonyl carbon

3. Number of peaks expected for ethyl acetate in 13C NMR are,

b. 4

4. The structure of product ethylacetate is,

d. d

5. The reading on the thermometer at the begnining of distillation is,

b. 25 oC

6. The peaks at 4.08 ppm and 1.24 ppm are for,

c. ethyl group

7. The downfiled shift of signals in 1H NMR is due to,

a. an inductive effect

8. Ethylacetate belongs to,

b. ester

9. Distillation purification step was needed in the experiment to,

c. To remove unreacted starting material

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