Consider the Cell: Ni ∣ Ni²⁺ (?M) || Cu²⁺ (0

question 85

Multiple Choice

Consider the cell: Ni ∣ Ni²⁺ (?M) || Cu²⁺ (0.136 M) ∣ Cu
Ni²⁺/Ni E° = -0.257 V
Cu²⁺/Cu E° = 0.340 V
The measured potential of the cell is 0.621 V. What is [Ni²⁺] at 25°C?

• A) 2 × 10^-2 M
• B) 1 M
• C) 4 × 10^-42 M
• D) 0.05 M
• E) 0.4 M