Question

Given:
$E_{A{g}^{+}/Ag}^o=+0.80V,E_{C{o}^{2+}/Co}^{{}^{\circ }}=-0.28V$
$E_{C{u}^{2+}/Cu}^o=+0.34V,E_{Z{n}^{2+}/Zn}^o=-0.76V$
Which metal will corrode fastest?

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

Answer 1

Answer: (D)

Most reactive metal corrodes fastest.