Which of the following half-reactions represents an oxidation process?

CHEMISTRY · Single correct · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

Which of the following half-reactions represents an oxidation process? (a)

\mathrm{Cl_2 + 2\,e^- \;\rightarrow\; 2\,Cl^-}

(b)

\mathrm{Zn \;\rightarrow\; Zn^{2+} + 2\,e^-}

(c)

\mathrm{Al^{3+} + 3\,e^- \;\rightarrow\; Al}

(d)

\mathrm{Fe^{3+} + e^- \;\rightarrow\; Fe^{2+}}