Alkanones

Question 1

What are alkanones?

Answer 1

These are dipole carbonyl compounds with the functional group:

         O
        ||
         C  
      /     \
   R         R

Question 2

What are the physical properties of alkanones?

Answer 2

1. Lower alkanones are soluble in water due to the hydrogen bond and dipole-dipole attraction that is formed between alkanones and water molecules.
2. Boiling point increases with increasing molecular mass, arising from the increase in Van Der Waal forces which is a result of increasing electrons.

Question 3

What does oxidizing secondary alcohols lead to?

Answer 3

To the formation of ketones (alkanones).

Question 4

What is the use of alkanones?

Answer 4

Alkanones are found in hormones and as antioxidants.

Question 5

What method of forming alkanones involves alkenes?

Answer 5

The ozonolysis of alkenes whose carbon atoms carry two alkyl groups.

Reaction

Question 6

What method of synthesizing alkanones involves alcohols?

Answer 6

The oxidation of secondary alcohols with acidified potassium heptodichromate VI

Reaction

Question 7

How are ketones prepared?

Answer 7

1. Ozonolysis of alkenes with two alkyl groups in the presence of zinc and water.
2. Oxidation of secondary alkanols with potassium heptodichromate VI.