What characteristic frequencies in the infrared spectrum of your sodium borohydride reduction product will you look for to determine whether the carbonyl group (in ethyl vanillin) has been converted to an alcohol functional group? That is, if the transformation has occurred, which characteristic frequencies should be present in the infrared spectrum, and which should be absent? How would the infrared spectrum for the sodium borohydride reduction product be affected if the product were still wet with water? Explain your reasoning.

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22-09-2020
Chemistry

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What characteristic frequencies in the infrared spectrum of your sodium borohydride reduction product will you look for to determine whether the carbonyl group (in ethyl vanillin) has been converted to an alcohol functional group? That is, if the transformation has occurred, which characteristic frequencies should be present in the infrared spectrum, and which should be absent? How would the infrared spectrum for the sodium borohydride reduction product be affected if the product were still wet with water? Explain your reasoning.

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batolisis batolisis · Answer 1 · 2020-09-25T00:15:38+02:00

Answer:

A)The characteristic frequency to look out for is 1720-1740 cm-1 (for C=O) for which will disappear in the end product but initially present in the reactant.

B)Characteristic frequency present in the infrared spectrum will be at a peak of 3300-3400 cm-1 which will be due to O-H stretch.

C)If the product is wet with water there will be no change in the infrared spectrum

Explanation:

The characteristic frequency to look out for is 1720-1740 cm-1 (for C=O) for which will disappear in the end product but initially present in the reactant.

Characteristic frequency present in the infrared spectrum will be at a peak of 3300-3400 cm-1 which will be due to O-H stretch.

If the product is wet with water there will be no change in the infrared spectrum

bratislava bratislava · Answer 2 · 2022-02-03T16:25:43+01:00

The characteristics frequencies.

As per the questions, the frequencies of infrared spectrum of the sodium borohydride are reduced and produced determines the carbonyl group has to be converted to an alcohol functional group The transformation has to be take place.

Thus the answer is frequency would look 1720-1740 cm-1

As the frequency to look out is 1720-1740 cm-1 (for C=O) which will disappear in the end product

The second characteristic the frequency found in the IR spectrum will be at a peak of 3300-3400 cm-1. If the product is wet with water there will thus be no change in IR frequency.

Learn more about the frequencies.

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