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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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. The “Chemistry in Focus” segment Stainless steel: It’s the Pits discusses the fact that stainless steel can corrode if there is a deficit of chromium. How does chromium protect stainless steel?

Interpretation Introduction

Interpretation:

The corrosion resistant nature of stainless steel should be explained.

Concept Introduction:

The oxidation and reduction can be identified by change in oxidation state. If oxidation state of atom of an element increases, it undergoes oxidation and if it decreases, it undergoes reduction.

The general oxidation and reduction half reactions are as follows:

AsA+aq+e

Here, As undergoes oxidation to form A+aq with release of 1 electron. The oxidation state of A increases from 0 to 1.

Similarly,

B+aq+eBs

Here, B+aq undergoes reduction to form Bs with addition of 1 electron. The oxidation state of A decreases from 1 to 0.

Explanation

An alloy of iron and 10.2% chromium is known as stainless steel. Due to the presence of chromium, it forms a thin layer of oxide on the steel surface thus, layer is known as passive layer that protects the steel from corrosion.

If the amount of chromium increases in the steel, it becomes more resistance to the corrosion...

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