question_answer

100 mL of a buffer of \[1\,\,M\,\,N{{H}_{3}}(aq)\] and \[1\,\,M\,\,N{{H}_{4}}^{+}(aq)\] is placed in two voltaic cells separately. A current of 1.5 A is passed through both the cells for 20 minutes. If electrolysis of water only takes place \[2{{H}_{2}}O+{{O}_{2}}+4{{e}^{-}}\to 4O{{H}^{-}}\,\,\,(RHS)\] \[2{{H}_{2}}O\to 4{{H}^{+}}+{{O}_{2}}+4{{e}^{-}}\,\,\,(LHS)\]

A)  LHS half-cell will increase           

B)  RHS half-cell will increase

C)  Both half-cells will increase           

D)  Both half-cells will decrease.