Can `Cr(III)` salt be oxidised to `Cr(VI)` salt by potassium (or ammonium) peroxodisulphate ?

Explanation

To determine if `Cr(III)` salt can be oxidized to `Cr(VI)` salt by potassium (or ammonium) peroxodisulfate, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
We are dealing with `Cr(III)` salt, which can be represented as `Cr^3+`, and potassium peroxodisulfate, which has the formula `K2S2O8`. The relevant ion in this compound is the peroxodisulfate ion, `S2O8^2-`.

2. **Write the Reaction**:
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