Answer :

Lower aliphatic amines are soluble in water because they can form H-bonds with water molecules. Solubility increases with increase in no. of H-atoms in amine due to its ability to form H-bonds with water making it more soluble. Further, the solubility of amines decreases with increase in the molecular mass due to increase in the size of the hydrophobic part.

Thus, the decreasing order of solubility in water is

C2H5NH2 > (C2H5)2NH > C6H5NH2

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(a) Write the reaChemistry - Board Papers