In the same cell, which species is reduced at the cathode?

Prepare for the Electrochemistry Test with our extensive quiz. Utilize flashcards and multiple-choice questions with detailed hints and explanations to excel in your exam!

Multiple Choice

In the same cell, which species is reduced at the cathode?

Explanation:
Reduction happens at the cathode, and in a galvanic cell the species that gets reduced is the one with the higher standard reduction potential because it more readily gains electrons. The Ag+/Ag couple has a standard reduction potential of about +0.80 V, while the Fe3+/Fe2+ couple is around +0.77 V. Since Ag+/Ag has the larger value, Ag+ is reduced to Ag at the cathode (Ag+ + e− → Ag). The opposite process occurs at the anode, with Fe2+ being oxidized to Fe3+.

Reduction happens at the cathode, and in a galvanic cell the species that gets reduced is the one with the higher standard reduction potential because it more readily gains electrons. The Ag+/Ag couple has a standard reduction potential of about +0.80 V, while the Fe3+/Fe2+ couple is around +0.77 V. Since Ag+/Ag has the larger value, Ag+ is reduced to Ag at the cathode (Ag+ + e− → Ag). The opposite process occurs at the anode, with Fe2+ being oxidized to Fe3+.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy