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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” segmentYellow Jeans?discusses the oxidation-reduction reaction required to turn the dye used in denim jeans from yellow to blue. The reaction is from leucoindigo to indigo. The reaction can be expressed as Na 2 C 16 N 2 H 1 0 O 2 C 16 N 2 H 1 0 O 2 . Explain how from this reaction you know that the leucindigo is oxidized to form indigo.

Interpretation Introduction

Interpretation:

How from the reaction which turn leucoindigo to indigo, we know that the leucoindigo is oxidized to form indigo should be explained?

Concept Introduction:

The dye used to manufacture blue jeans is leucoindigo, which is yellow in color. The blue dye indigo is water insoluble. So in dying operation water soluble leucoindigo is used. Therefore the jeans are initially yellow in color, but the dye is oxidized by atmospheric oxygen into indigo which is blue in color.

Na2C16N2H10O2C16N2H10O2.

Explanation

Both dyes consist the part C16N2H10O2. But in leucoindigo, this part bears a 2 charge

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