question_answer

Match list I (Solutions of salts of...) with list II (pH of the solution is given by) and select the correct answer using the codes given below the lists:

List I	List II
Weak acid and strong base	(p) \[\frac{1}{2}p{{K}_{w}}\]
Strong acid and weak base	(q) \[\frac{1}{2}(p{{K}_{w}}-p{{K}_{b}}+p{{K}_{a}})\]
Weak acid and weak base	(r) \[\frac{1}{2}(p{{K}_{w}}-p{{K}_{b}}-\log \,\,C)\]
Strong acid and strong base	(s) \[\frac{1}{2}(p{{K}_{w}}+p{{K}_{a}}+\log \,\,C)\]

Codes:                                                     

A) A\[\to \]p, B\[\to \]q, C\[\to \]r, D\[\to \]s               

B) A\[\to \]s, B\[\to \]r, C\[\to \]q, D\[\to \]p

C) A\[\to \]s, B\[\to \]r, C\[\to \]p, D\[\to \]q               

D) A\[\to \]r, B\[\to \]s, C\[\to \]q, D\[\to \]p