Number of Faradays required to convert 1 mol of `Cr_(2)O_(7)^(2-)` into `Cr^(3+)` ions is :

Explanation

To determine the number of Faradays required to convert 1 mole of \( \text{Cr}_2\text{O}_7^{2-} \) into \( \text{Cr}^{3+} \) ions, we can follow these steps:

### Step 1: Identify the oxidation states
First, we need to find the oxidation states of chromium in \( \text{Cr}_2\text{O}_7^{2-} \).

- Let the oxidation state of chromium be \( x \).
- The oxidation state of oxygen is \( -2 \).
- The overall charge of the ion is \( -2 \).
...