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Sum

**Answer the following:**

Equilibrium constant of the reaction,

`2"Cu"_(("aq"))^+ -> "Cu"_(("aq"))^(2+) + "Cu"_(("s"))` is 1.2 × 10^{6}.

What is the standard potential of the cell in which the reaction takes place?

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#### Solution

**Given: **Equilibrium constant of the reaction (K) = 1.2 × 10^{6}.

**To find:** Standard potential of cell `("E"_"cell"^circ)`

**Formulae: **`("E"_"cell"^circ) = (0.0592 "V")/"n" log_10 "K"`

**Calculation:**

For the given reaction, n = 1.

Using formula,

`("E"_"cell"^circ) = 0.0592/1 xx log_10 (1.2 xx 10^6)`

`("E"_"cell"^circ) = 0.0592 xx (6.079)` = 0.36 V

The standard cell potential of cell is 0.36 V.

Concept: Thermodynamics of Galvanic Cells

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