Infrared Spectroscopy Table Video Lessons

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Problem: For the following reaction, which of the following is consistent with a comparison of the IR spectra of the starting material vs. the product? a) Absorption at 2250 cm –1 should disappear, new absorption at 2600-2800 cm –1 and 1720 cm –1 should appear. b) Absorption at 2250 cm –1 should disappear and absorption around 3400 cm –1 should appear. c) Absorption at 3200-3400 cm –1 and 1720 cm –1 should appear. d) Absorption at 2250 cm –1 should disappear. e) None of these.

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Problem Details

For the following reaction, which of the following is consistent with a comparison of the IR spectra of the starting material vs. the product?

a) Absorption at 2250 cm –1 should disappear, new absorption at 2600-2800 cm –1 and 1720 cm –1 should appear.

b) Absorption at 2250 cm –1 should disappear and absorption around 3400 cm –1 should appear.

c) Absorption at 3200-3400 cm –1 and 1720 cm –1 should appear.

d) Absorption at 2250 cm –1 should disappear.

e) None of these.

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