1. Tardigrade
  2. Question
  3. Chemistry
  4. The values of standard oxidation potentials of following reactions are given below: (i) Zn longrightarrow Zn 2++2 e- ; E°=0.762 V (ii) Fe longrightarrow Fe 2++2 e- ; E°=0.440 V (iii) Cu longrightarrow Cu 2++2 e- ; E°=-0.345 V (iv) Ag longrightarrow Ag ++e- ; E°=-0.800 V Which of the following is most easily reduced?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The values of standard oxidation potentials of following reactions are given below :
(i) $Zn \longrightarrow Zn ^{2+}+2 e^{-} ; E^{\circ}=0.762\, V$
(ii) $Fe \longrightarrow Fe ^{2+}+2 e^{-} ; E^{\circ}=0.440 \,V$
(iii) $Cu \longrightarrow Cu ^{2+}+2 e^{-} ; E^{\circ}=-0.345\, V$
(iv) $Ag \longrightarrow Ag ^{+}+e^{-} ; \quad E^{\circ}=-0.800\, V$
Which of the following is most easily reduced?

BHUBHU 2003

Solution:

Lower the axidation potential of the element easier will be its reduction. Compare the axidation potential of elements and find the answer.
$\because$ Ag has lowest oxidation potential among given choices.
$\therefore Ag$ is reduced most easily.