Explain order of Kb in aquas solution of Triethylamine, Diethylamine and Ethylamine.

(Et)₂NH     >     (Et)₃N     >      (Et)NH₃             {Et = Ethyl group (-CH₂CH₃)}

Answer:-

-> (Et)₂NH is more basic than (Et)₃N because of less steric hindrance and more hydration energy of (Et)₂NH.

-> (Et)₃N is more basic than (Et)NH₃ because of more +I Effect in (Et)₃N.