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ΔG is an extensive property while E_cell is an intensive property. This means:
ABoth remain unchanged regardless of stoichiometry
BIf the cell reaction is doubled, E_cell doubles but ΔG remains unchanged
CIf the cell reaction is doubled, both ΔG and E_cell double
DIf the cell reaction is doubled, ΔG doubles but E_cell remains unchanged
Answer & Solution
Correct answer: D. If the cell reaction is doubled, ΔG doubles but E_cell remains unchanged
ΔG depends on **amount** (extensive) — doubling the reaction stoichiometry doubles n and so doubles ΔG. E_cell depends only on the **identity** of the half-cells and concentrations (intensive) — it does not scale with the stoichiometric multiplier.
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