6. Consider the concentration cell: Cu | Cu²⁺ (5.0 ✖ 10^-5 M)||Cu²⁺ (0.50 M)| Cu. What is the cell potential (in volt) at 25°C?
(A) 0.06
(B) 0.12
(C) 0.18
(D) 0.24 2

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