Question

Given:
$E^{o}_{Ag^{+} / Ag}=+0.80V,E_{Co^{2 +} / Co}^{^\circ }=-0.28V$
$E^{o}_{Cu^{2 +} / Cu}=+0.34V,E^{o}_{Zn^{2 +} / Zn}=-0.76V$
Which metal will corrode fastest?

• A. $Ag$
• B. $Cu$
• C. $Co$
• D. $Zn$

Answer 1

Answer: (D)

Most reactive metal corrodes fastest.