Question

Given $E^{\circ} _{Ag^{+}/Ag}= +0.80 \,V; E^{\circ}_{Cu^{2+}/Cu} =+0.34 \,V;$
$E^{\circ} _{Fe^{3+}/Fe^{2+}}= +0.76 \,V ; E^{\circ}_{Ce^{4+}/Ce^{3+}} = +1.60\, V$
Which of the following statements is not correct?

• A. $Fe^{3+}$ does not oxidise $Ce^{3+}$.
• B. $Cu$ reduces $Ag^+$ to $Ag$.
• C. $Ag$ will reduce $Cu^{2+}$ to $Cu$.
• D. $Fe^{3+}$ reduces $Cu^{2+}$ to $Cu$.

Answer 1

Answer: (C)

Since $Ag$ has higher reduction potential than $Cu$, $Ag$ will not reduce $Cu^{2+}$ to $Cu$. $Cu$ can reduce $Ag^+$ to $Ag$.