What is the major disadvantage of using concentrated sulfuric acid rather than 85% phosphoric acid for the dehydration of alcohols?

Respuesta :

Concentrated sulfuric acid has a tendency to protonate the alkene product, which causes the product to polymerize. More viscous, dark sludge is delivered.

What is polymerization?

The process of creating polymers is called polymerization. Following processing, these polymers are used to create a variety of plastic items. Smaller molecules, or monomers, are combined chemically to form larger molecules, or macromolecules, during polymerization. A polymer is created by hundreds of these macromolecules working together.

To create polymers with special properties suited for a variety of applications, several polymerization processes are used. For instance, hundreds of ethylene monomers are polymerized to create polyethylene, which is utilized for many applications that demand special qualities, such as carrying bags, milk jugs, storage containers, trash barrels, rubbish liners, food packages, and corrugated conduits.

Explanation:

Most of the time, concentrated HCl won't work to treat dehydration since thermodynamics work against you. In the lab, students frequently use HCl inadvertently in place of sulfuric or phosphoric acid, and they typically receive starting material back. Keep in mind that the exothermic interaction between the sulfuric and phosphoric acids and the water product drives the process to completion.

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