Predict whether `Tl^(oplus)` will disproportionate in aqueous solution :
`Tl^(3+) overset (1.25 V) rarr Tl^(oplus) overset (-0.34 V) rarr Tl`.

Explanation

To determine whether \( \text{Tl}^+ \) will disproportionate in aqueous solution, we need to analyze the given half-reactions and their standard electrode potentials (EMF values).

### Step-by-Step Solution:

1. **Identify the Half-Reactions**:
We are given two half-reactions with their respective EMF values:
- \( \text{Tl}^{3+} + 2e^- \rightarrow \text{Tl} \) with \( E_1 = 1.25 \, \text{V} \)
- \( \text{Tl}^+ + e^- \rightarrow \text{Tl} \) with \( E_2 = -0.34 \, \text{V} \)
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