For `(M^(2+))/(M)` and `(M^(3+))/(M^(2+))` systems the `E^(ɵ)` values for some metals are as follows.
`(Cr^(2+))/(Cr) -0.9V, (Cr^(3+))/(Cr^(2+)) -0.4V`
`(Mn^(2+))/(Mn)-1.2V,(Mn^(3+))/(Mn^(2+)) +1.5V`
`(Fe^(2+))/(Fe) -0.4, (Fe^(3+))/(Fe^(2+)) +0.8V`
Use this data comment upon:
(i). The stability of `Fe^(3+)` in acid solutio as compared to that of `Cr^(3+)` or `Mn^(3+)` and ltbtgt (ii). The case with which iron can be oxidised as compared to a similar process for either chromium or manganese metal.

Explanation

To solve the problem, we will analyze the stability of the ions and their oxidation potentials based on the given standard reduction potentials (E° values).

### Step 1: Analyze the stability of Fe³⁺, Cr³⁺, and Mn³⁺

1. **Given E° values**:
- Cr³⁺/Cr²⁺: -0.9 V
- Mn³⁺/Mn²⁺: +1.5 V
- Fe³⁺/Fe²⁺: +0.8 V
...