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Chapter 11: Q22P (page 441)


During the preparation of viscose rayon, cellulose is dissolved in a bath containing sodium hydroxide and later reprecipitated as rayon using a solution of sulfuric acid. Name the salt that is a by-product of this process. Rayon production is, in fact, a significant commercial source for this salt.

Short Answer

Expert verified

The salt formed as by-product is sodium sulfate.

Step by step solution

01

Given information

It is given that when we prepare the viscose rayon, cellulose gets dissolved in a bath having NaOH, . Then, rayon is formed by reprecipitation using sulfuric acid solution.

02

Reprecipitation

Reprecipitation in the preparation of rayon is the process in which the complete neutralization of sulfuric acid occurs.

03

By-product formed

After the formation of viscose rayon, the by-product will be formed from the reaction of sodium hydroxide with sulfuric acid. There is a possibility for the formation of sodium hydrogen sulfate, but the complete neutralization gives sodium sulfate.

Hence,the by-product is sodium sulfate.

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