Question

The standard $E^{\circ}$ values of few redox couples are $Zn^{2+}/ Zn = -0.76\, V$, $Ag^+/ Ag = + 0.80 \,V$, $Cu^{2+}/Cu = 0.34\, V$. Choose the correct option.

• A. $Ag$ can oxidise $Zn$ and $Cu$.
• B. $Ag$ can reduce $Zn^{2+}$ and $Cu^{2+}$.
• C. $Zn$ can reduce $Ag^+$ and $Cu^{2+}$.
• D. $Cu$ can reduce $Zn^{2+}$ and $Ag^+$.

Answer 1

Answer: (C)

$Zn$ can reduce $Ag^+$ and $Cu^{2+}$.

Answer 2

Zinc can reduce $Ag^+$ and $Cu^{2+}$ due to lowest reduction potential.