Organic Chemistry Practice Problems Infrared Spectroscopy Table Practice Problems Solution: For the following reaction, which of the following...

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Solution: For the following reaction, which of the following change(s) in the IR spectrum is consistent with conversion of the reactant to the product? a. absorption at 2150 cm -1 should disappear  b. absorption at 3300 cm -1 and 2150 cm -1 should disappear  c. absorption at 2250 cm -1 should disappear, a new absorption at 3300 cm -1 should appear  d. absorption at 1650 cm -1 should disappear, a new absorption at 3300 cm -1 should appear e. absorption at 3300 cm -1 and 2150 cm -1 should disappear, a new absorption at 1720 cm -1 should appear

Problem

For the following reaction, which of the following change(s) in the IR spectrum is consistent with conversion of the reactant to the product?

a. absorption at 2150 cm -1 should disappear 
b. absorption at 3300 cm -1 and 2150 cm -1 should disappear 
c. absorption at 2250 cm -1 should disappear, a new absorption at 3300 cm -1 should appear 
d. absorption at 1650 cm -1 should disappear, a new absorption at 3300 cm -1 should appear
e. absorption at 3300 cm -1 and 2150 cm -1 should disappear, a new absorption at 1720 cm -1 should appear

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