Table of Contents
- 1 How is phenol prepared from cumene give equation?
- 2 Which will react with cumene to give phenol?
- 3 When phenol is prepared from cumene Which of the following is obtained as a byproduct in large quantities?
- 4 When phenol is prepared from cumene then in addition to phenol we get?
- 5 Which by product is obtained in the manufacture of phenol from cumene?
- 6 What is cumene process Class 12?
How is phenol prepared from cumene give equation?
To prepare phenol, cumene is first oxidized in the presence of air of cumene hydro-peroxide. Then, cumene hydroxide is treated with dilute acid to prepare phenol and acetone as by-products.
Which will react with cumene to give phenol?
What is the reagent which will react with cumene to give phenol? Explanation: Upon oxidation of cumene (isopropylbenzene) in presence of air (oxygen), cumene hydroperoxide is obtained. Upon further treatment of cumene hydroperoxide with dilute acid phenols are obtained.
How is phenol manufactured from cumene Class 12?
Cumene is oxidised by oxygen to form cumene hydroperoxide. Which on acid hydrolysis gives phenol.
How is phenol prepared from cumene shaala?
Preparation of phenol from cumene: a. When an alkaline solution of cumene (isopropyl benzene or 2-Phenylpropane) in sodium carbonate is oxidised by passing air or oxygen in the presence of cobalt naphthenate as a catalyst at 423 K, cumene hydroperoxide is obtained.
When phenol is prepared from cumene Which of the following is obtained as a byproduct in large quantities?
acetone
Cumene is converted by air oxidation into cumene hydroperoxide,which is converted by aqueous acid into phenol and acetone: Along with the large amount of phenol produced each year, a great deal of acetone is obtained, and this process is one of the prinicipal sources of that compound ,too.
When phenol is prepared from cumene then in addition to phenol we get?
Steps of the process A pressure of 5 atm is used to ensure that the unstable peroxide is kept in liquid state. Cumene hydroperoxide is then hydrolysed in an acidic medium (the Hock rearrangement) to give phenol and acetone.
How will you prepare phenol from aniline and cumene?
Phenol is prepared from aniline. At the first step aniline is treated with HCL at around 273 to 278 K diazonium salts are obtained. These diazonium salts are very reactive. And when they are warm with water they get hydrolyzed to phenol.
How will you prepare phenol by using cumene write uses of phenol?
Preparation of Phenols from Cumene Upon oxidation of cumene (isopropylbenzene) in the presence of air, cumene hydroperoxide is obtained. Upon further treatment of cumene hydroperoxide with dilute acid, phenols are obtained. Acetone is also produced as one of the by-products of this reaction in large quantities.
Which by product is obtained in the manufacture of phenol from cumene?
In the preparation of phenol from cumene, the by-product obtained is. Preparation of phenol from cumene. By product is acetone i.e. propanone.
What is cumene process Class 12?
Cumene (isopropyl benzene) is oxidised in the presence of air to give cumene hydroperoxide. It is converted to phenol and acetone by treating with dilute acid.
Which by-product is obtained in the manufacture of phenol from cumene?