Redox reactions involve a transfer of which of the following from one atom to another?

Which of the following balanced equations represents a redox (oxidation-reduction) reaction?

In the redox reaction Zn + Cu^{2+} → Zn^{2+} + Cu, which species is oxidized?

Which of the following methods is most appropriate for determining the activation energy of the redox reaction q^{2+} + 2 r^{+} ightarrow q^{0} + 2 r^{2+}?

In the disproportionation reaction Cl2(g) → Cl−(aq) + ClO−(aq), which element undergoes both oxidation and reduction?

In the electrochemical cell based on the reaction Zn(s) + Cu^{2+}(aq) → Zn^{2+}(aq) + Cu(s), which of the following correctly lists the half-reactions occurring at the anode and cathode?

Given the redox reaction: Zn + Cu^{2+} → Zn^{2+} + Cu, which of the following correctly separates the reaction into its oxidation and reduction half-reactions?

Classify the transformation of Fe^{3+} to Fe^{2+} as reduction, oxidation, or neither.

In the redox reaction Cr2O7^{2-}(aq) + Cu^+(aq) → Cr^{3+}(aq) + Cu^{2+}(aq), which species is oxidized?