The values for Ammonia, Methanamine, and Benzenamine (aniline) are approximately 4.75, 3.38, and 9.3 — Amines Chemistry Question

💡 Solution & Explanation

The basic strength of a compound in solution is inversely proportional to its logarithmic basicity constant ($pK_b$); a smaller $pK_b$ 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.