Which Is the Half-Reaction at the Cathode in a Lead

question 102

Multiple Choice

Which is the half-reaction at the cathode in a lead storage battery?

• A) Pb(s)+ PbO₂(s) + 4H⁺(aq) + 2SO₄^2-(aq) → 2PbSO₄(s) + 2H₂O(l)
• B) PbO₂(s) + 4H⁺(aq) + 2SO₄^2-(aq) + 2e^- → PbSO₄(s) + 2H₂O(l)
• C) Pb(s) + SO₄^2-(aq) → PbSO₄(s) + 2e^-
• D) Pb(s) → Pb(s) + 2e^-
• E) H₂(g) → 2H⁺(aq) + 2e^-

---

Definitions:

Extra Thinking

The act of engaging in thought processes beyond what is necessary or typical, often leading to overanalysis or excessive planning.

Automatic Processing

A type of cognitive processing that occurs quickly, without conscious thought, often based on learned habits or routines.

Conscious Processing

The deliberate and aware mental activities and thought processes involved in perception, decision-making, and problem-solving.

Knowledge Structures

Organized packets of information that are stored in memory.