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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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What does it mean for a substance to be oxidized? The term “oxidation” originally came from substances reacting with oxygen gas. Explain why a substance that reacts with oxygen gas will always be oxidized.

Interpretation Introduction

Interpretation:

The term oxidized should be determined and explain the reason for a substance which reacts with oxygen gas will always be oxidized.

Concept Introduction:

The chemical reaction in which both oxidation and reduction process takes place is known as redox reaction. In this reaction, transfer of electrons takes place among the elements.

Oxidation is the process in which either loss of electrons, oxidation number increases, or loss of hydrogen atoms takes place. An element is oxidized, when oxidation number increases.

Reduction is the process in which either gain of electrons, oxidation number decreases, or gain of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.

Explanation

The term oxidized refers to the increase in oxidation number.

For an example:

2Al(s)+3S(s)Al2S3(s)

Here, Al2S3 contains Al3+ and S2- ions.

In reaction, oxidation state of aluminium increases that are from 0 to + 3 by losing electron and oxidation of state of sulfur decreases that are from 0 to -2 by gaining electron

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