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For each of the following balanced half-reactions, determine whether an oxidation or reduction is occurring.(a) $\mathrm{Fe}^{3+}+3 \mathrm{e}^{-} \longrightarrow \mathrm{Fe}$(b) $\mathrm{Cr} \longrightarrow \mathrm{Cr}^{3+}+3 \mathrm{e}^{-}$(c) $\mathrm{MnO}_{4}^{2-} \longrightarrow \mathrm{MnO}_{4}^{-}+\mathrm{e}^{-}$(d) $\mathrm{Li}^{+}+\mathrm{e}^{-} \longrightarrow \mathrm{Li}$
a) Reductionb) Oxidationc) Oxidationd) Reduction
Chemistry 102
Chapter 17
Electrochemistry
Carleton College
University of Central Florida
Rice University
University of Kentucky
Lectures
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oxidation is lost off electron, while process off reduction is gain off. Electron for auction e In this half reaction, every three positive gains. Three electrons to form Effie. Therefore, reduction is agreeing for Option two. There is loss off three electrons leading to formation off chromium. Three positive ends. Oxidation is occurring or option c. There is a loss off one electron leading to formacion off Yemen or four Negative, therefore oxidation for auction. D lead him positive. I am Gains one electron to form lead him giving us reduction.
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