First slide

Ionization constants of weak bases, PH of weak bases

Question

Weakest base among the following is

Easy

A

C₆H₅NH₂(pK_b = 9.4)
B

NH₄OH(pK_b = 4.8)
C

C₂H₅NH₂(pK_b = 3.2)
D

C₉H₇N(pK_b = 9.2)

Solution

Higher the $p^{k_{b}}$ value, lower will be the K_b value and so weaker will be the base.

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