In the following reaction, identify the species that are oxidized, those that ar

Question

In the following reaction, identify the species that are oxidized, those that are reduced. In addition, complete the half reactions associated with each reaction by indicating the stoichiometry of each species in the reaction.

Cu2+(aq) + Fe2+(aq) Cu+(aq) + Fe3+(aq)

Which species is oxidized?

Fe2+ is oxidized

Cu2+ is oxidized

Fe3+ is oxidized

Cu+ is oxidized

Which species is reduced?

Fe2+ is reduced

Cu2+ is reduced

Fe3+ is reduced

Cu+ is reduced

Choose the correctly balanced half reactions.

(Select all that apply.)

Fe2+(aq) Fe3+(aq) + e-

Cu2+(aq) + e- Cu+(aq)

Fe2+(aq) + e- Fe3+(aq)

Cu2+(aq) Cu+(aq) + e-

Which species is oxidized?

Fe2+ is oxidized

Cu2+ is oxidized

Fe3+ is oxidized

Cu+ is oxidized

Explanation / Answer

Cu2+(aq) + Fe2+(aq) --------------> Cu+(aq) + Fe3+(aq)

Oxidation half : Fe2+ (aq)   --------------> Fe+3 (aq) + e-

Reduction half : Cu2+ (aq) + e-   -------------> Cu+ (aq)

a)

species oxidized = Fe+2

Fe2+ is oxidized

b)

Cu2+ is reduced

c)

correct balanced half reactions :

Fe2+(aq) Fe3+(aq) + e-

Cu2+(aq) + e- Cu+(aq)

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