question_answer

Check the feasibility of the following redox reaction with the help of electrochemical series \[Ni(s)+2A{{g}^{+}}(aq)\,\xrightarrow{\,}N{{i}^{2+}}(aq)+2Ag(s)\]

Answer:

                The E° value of \[N{{i}^{2+}}/Ni\] is ? 0.25V while that of \[A{{g}^{+}}/Ag\] is +0.80 V. This means that nickel is placed below silver in the series and can easily reduce \[A{{g}^{+}}\] ions to silver by releasing electrons. The redox reaction is therefore, feasible.