Question 1) Which of the following wavelengths corresponds t

Essay Writers chemistry Question 1) Which of the following wavelengths corresponds t

chemistry

Question 1) Which of the following wavelengths corresponds t


1) Which of the following wavelengths corresponds to the photon with the highest energy?

385 nm
425 nm
318 nm

538 nm

647nm

2) Which of the following would not show any peaks at frequencies higher than 3000 cm–1 in its IR spectrum?

mc020-1.jpg
mc020-2.jpg
mc020-3.jpg
mc020-4.jpg
mc020-5.jpg

3) Which of the following structural features is consistent with the spectrum shown below?
mc017-1.jpg

An unsubstituted benzene ring
A monosubstituted benzene ring
An ortho-substituted benzene ring
A meta-substituted benzene ring
A para-substituted benzene ring

4) Which hydrogen atom has the greatest chemical shift?

mc004-1.jpg

HA
HB
HC

HD

He

5) Sketch a predicted 1H NMR spectrum for the following molecule.

sa022-1.jpg

6) Is a chlorine or a bromine present in the molecule responsible for the following mass spectrum? Explain how you know.
sa028-1.jpg

7) Which molecule has a triplet of doublets in its 1H NMR spectrum?
mc017-1.jpg

I
II
III
IV
V

8) The mass spectrum for an unknown molecule has an M+ peak with a relative intensity of 100 and an M + 1 peak with a relative intensity of 9.905. How many carbons are in the unknown molecule?

1 carbon
5 carbons
9 carbons
10 carbons
100 carbons

9) The mass spectrum for an unknown molecule has an M+ peak with a relative intensity of 100 and an M + 1 peak with a relative intensity of 5.5. How many carbons are in the unknown molecule?

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