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For the electrochemical cell represented as Zn(s) | ZnSO₄(aq) || CuSO₄(aq) | Cu(s), if the concentration of Zn²⁺ ions is ten times greater than that of Cu²⁺ ions, what is the formula for ΔG (in J mol⁻¹)? (Here, F is the Faraday constant, R is the gas constant, T is the temperature, and the standard cell potential E°(cell) = 1.1 V.)
- 2.303RT + 1.1F
- 2.303RT - 2.2F
- 1.1F
- -2.2F
Correct answer: 2.303RT - 2.2F
Solution
The formula for ΔG can be derived from the Nernst equation, considering the concentration of Zn²⁺ ions being ten times greater than that of Cu²⁺ ions, and using the given standard cell potential E°(cell) = 1.1 V.
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