Hydrolysis of ROH: Using HCl & ZnCl2 w/ Water

  • Thread starter Clari
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In summary, dry HCl and anhydrous ZnCl2 catalysts are used for primary and secondary alkanol in substitution reactions. For tertiary alkanol, concentrated HCl and ZnCl2 can also be used due to the stability of the carbocation intermediate. This means that the presence of a small amount of water does not significantly affect the reaction. It is important to follow the instructions in the manual when conducting the lucas test experiment.
  • #1
Clari
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In the substitution of ROH to RX, dry HCl and anhydrous ZnCl2 catalysts are used for primary and secondary alkanol. Why it is fine to use concentrated HCl and ZnCl2 for tertiary alkanol, that is to say, with small amounts of water present?
 
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  • #2
Think about the mechanism of the reaction, and the trends in the stability of the intermediate
 
  • #3
so because the carbocation intermediate of tertiary ROH is more stable, so the presence of a little amount of water does not affect the reaction much. Am I right? :rolleyes:
 
  • #4
You're doing the lucas test experiment right? From what I remember, you're supposed to add concentration acid to all solutions, you might want to ascertain whether your manual indicates otherwise.
 

Related to Hydrolysis of ROH: Using HCl & ZnCl2 w/ Water

What is hydrolysis?

Hydrolysis is a chemical reaction in which a compound reacts with water to form two or more products.

What is the purpose of using HCl and ZnCl2 in the hydrolysis of ROH?

HCl and ZnCl2 are used as catalysts in the hydrolysis reaction. They help to speed up the reaction and increase the yield of the desired products.

What is the role of water in the hydrolysis of ROH?

Water is one of the reactants in the hydrolysis reaction. It provides the necessary medium for the reaction to take place and also serves as a solvent for the other reactants.

What are the products of the hydrolysis of ROH using HCl and ZnCl2 with water?

The products of this reaction are an alcohol (ROH) and a corresponding acid (RCOOH). For example, if the ROH is ethanol, the products would be ethanol and acetic acid.

What are the applications of hydrolysis in industry and research?

Hydrolysis is used in many industries for the production of various chemicals, such as fatty acids, alcohols, and esters. It is also an important process in biochemical reactions and is used in research to study the properties of different compounds.

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