question_answer

1.0 L each of a buffer containing 1 mole \[N{{H}_{3}}\] and 1 mol of \[NH_{4}^{+}\] were placed in the cathodic and anodic half-cells and 965 C of electricity was passed. If anodic and cathodic half cells reactions involve oxidation and reduction of water only as

\[2{{H}_{2}}O\xrightarrow{{}}4{{H}^{+}}+{{O}_{2}}-4{{e}^{-}};\]

\[2{{H}_{2}}O+2{{e}^{-}}\xrightarrow{{}}{{H}_{2}}+2O{{H}^{-}}\]

Then pH of

A) cathodic solution will increase

B) anodic solution will decrease

C) both the solutions will remain practically constant

D) both the solutions will increase