Which of these processes can occur at the anode in an electrochemical cell? A) Br₂ + 2e⁻ → 2Br⁻ B) Zn → Zn²⁺ + 2e⁻ C) Cu²⁺ + 2e⁻ → Cu D) Na⁺ + 1e⁻ → Na E) Pb⁴⁺ + 2e⁻ → Pb²⁺

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At the anode, oxidation occurs, which involves loss of electrons. Option B shows a species (Zn) that can lose two electrons to form Zn2+ ions, indicating that oxidation can occur at the anode in this electrochemical cell. The other options involve reduction or do not have a species that can undergo oxidation at the anode.

Which of These Processes Can Occur at the Anode in an Electrochemical