COMEDK · Chemistry · 29. Amines
Consider the following compounds
ethanamine (i); diethylamine (ii); aniline (iii) and \(N\) - methylbenzenamine (iv) The correct decreasing order of pKb values of the compounds is:
- A iii \(>\) iv \(>\) i \(>\) ii
- B ii \(>\) iv \(>\) i \(>\) iii
- C ii \(>\) i \(>\) iv \(>\) iii
- D iii \(>\) iv \(>\) ii \(>\) i
Answer & Solution
Correct Answer
(A) iii \(>\) iv \(>\) i \(>\) ii
Step-by-step Solution
Detailed explanation
The basicity of amines is inversely proportional to their \(pK_b\) values. Higher basicity corresponds to a lower \(pK_b\) value. Comparing the basicity of the given compounds: 1. Diethylamine (ii) is a secondary aliphatic amine. It is the most basic due to the electron-donating…
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