Redox Reactions Flashcards
(2 cards)
1
Q
Identifying Oxidized and Reduced Species
A
Assign oxidation numbers to every element on both sides of the reaction. The element whose number increases is oxidised and acts as the reducing agent because it donates electrons; the element whose number decreases is reduced and functions as the oxidising agent. The paired changes reveal electron transfers.
2
Q
Calculating E°₍cell₎ from Reduction Potentials
A
Look up each half‑reaction’s standard reduction potential E°. Write the reaction so the more positive E° remains as reduction; reverse the other half and change its sign. Add the two potentials: E°₍cell₎ = E°(cathode) – E°(anode). Do not multiply E° values by coefficients; they are intensive properties.
