question_answer

Consider the following half cell reactions: \[C{{u}^{2+}}+2{{e}^{-}}=Cu\] \[E_{C{{u}^{2+}}/Cu}^{o}=0.34\,V\] \[A{{g}^{+}}+{{e}^{-}}=Ag\] \[E_{A{{g}^{+}}/Ag}^{o}=0.80\,V\] Which one of the following is true?

A)  copper can displace silver from\[AgN{{O}_{3}}\]solution

B)  silver can displace copper from\[Cu{{(N{{O}_{3}})}_{2}}\]solution

C)  silver is more reactive than copper

D) \[C{{u}^{2+}}/Cu\]and\[A{{g}^{+}}/Ag\]with positive\[E{}^\circ \]values cannot be coupled to form a Galvanic cell