What is the product of Kolbe electrolysis?

Ortho-hydroxybenzoic acid (salicylic acid) is formed as the primary product. This reaction is popularly known as Kolbe’s reaction.

What is Kolbe’s synthesis?

Definition of Kolbe reaction 1 : the synthesis of a hydrocarbon (as ethane) by the electrolysis of a salt (as sodium acetate) 2 : the synthesis of salicylic acid by heating a mixture of sodium phenoxide and carbon dioxide under pressure at 180° to 200° C.

What is the mechanism for the Kolbe’s electrolysis?

The reaction mechanism involves a two-stage radical process: electrochemical decarboxylation gives a radical intermediate, which combine to form a covalent bond. As an example, electrolysis of acetic acid yields ethane and carbon dioxide: CH3COOH → CH3COO− → CH3COO· → CH3· + CO. 2CH3· → CH3CH.

What is Kolbe reaction with example?

(i) Kolbe’s reaction: When phenol is treated with sodium hydroxide, sodium phenoxide is produced. This sodium phenoxide when treated with carbon dioxide, followed by acidification, undergoes electrophilic substitution to give ortho-hydroxybenzoic acid as the main product. This reaction is known as Kolbe’s reaction.

Which is limitation of Kolbe electrolysis?

Limitations: (i) Only alkanes with an even number of carbon atoms can be formed. (ii) Methane cannot be prepared by this method.

Which one is the missing reagent of Kolbe Schmitt reaction?

Thus the missing reagent of Kolbe Schmidt reaction is carbon dioxide.

How is ethane prepared from Kolbe method?

For example by, Kolbe’s electrolytic method, electrolysis of aqueous solution of potassium acetate gives ethane. At anode acetate ion forms acetate free radical. This free radical undergoes decarboxylation to form methyl free radical. This methyl free radical then dimerises to form ethane.