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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

The body processes ethanol by first converting it to acetaldehyde in a reaction catalyzed by the enzyme alcohol dehydrogenase.

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In the body, acetaldehyde can cause headaches and nausea and is one of the causes of hangovers. Eventually, the acetaldehyde is oxidized to the acetate ion and then converted to carbon dioxide and water. In the reaction of ethanol with NAD+, which species (ethanol or NAD+) undergoes oxidation? Which species undergoes reduction?

Interpretation Introduction

Interpretation:

The molecule undergoes reduction and oxidation in the given reaction has to be determined.

Concept introduction:  The main concept in oxidation-reduction reaction is the transfer of electron from one reactant to other.

Oxidation is loss of electron from a species.

Reduction is gain of electron by a species.

Explanation

In terms of electron transfer oxidation is loss of electrons and reduction is gain of electrons.

CH3CH2OH+NAD+CH3CHO+NADH + H+

In the reaction CH3CH2OH undergoes oxidation and convert into CH3CHO. NAD+ undergoes reduction and convert into NADH

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