The values for Ammonia, Methanamine, and Benzenamine (aniline) are approximately 4.75, 3.38, and 9.38 respectively. Based strictly on these thermodynamic values, which of the following is the correct

Question

The $pK_b$ values for Ammonia, Methanamine, and Benzenamine (aniline) are approximately 4.75, 3.38, and 9.38 respectively. Based strictly on these thermodynamic values, which of the following is the correct increasing order of basic strength?

Prashant Kotian · Accepted Answer

Correct answer: A. The basic strength of a compound in solution is inversely proportional to its logarithmic basicity constant (); a smaller indicates a proportionately stronger base. Therefore, Methanamine (3.38) is the strongest base, followed by Ammonia (4.75), and Benzenamine (9.38) is logically the weakest base of the set.

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