question_answer

In a buffer solution containing equal concentration of \[{{B}^{+}}\] and HB, the \[{{K}_{b}}\] for \[{{B}^{-}}\] is \[{{10}^{-10}}\]. The pH of buffer solution is                                                                  [AIPMT (S) 2010]   

A)  10                   

B)       7                  

C)  6                    

D)       4

Correct Answer: D

Solution :

Key Idea (i) For basic buffer

(ii)

Given,