Amines (Part-2)

What is the definition of amines? How many marks carried by the chapter Amines in class 12 board examinations? Why we study the chapter Amines? How important the chapter Amines? What is the basis for the classification of Amines? What is the structure of amines? Do a comparative study of ammonia and amines? What is the hybridization of central atom in amines?

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Lower aliphatic amines have the property to form hydrogen bond with water molecule and because of this they are soluble in water. However, solubility decreases with increase in molar mass of amines due to increase in size of the hydrophobic alkyl part. Higher amines are essentially insoluble in water. Considering the electronegativity of nitrogen of amine and oxygen of alcohol as 3.0 and 3.5 respectively, you can predict the pattern of solubility of amines and alcohols in water.