The degree of dissociation of HI at a particular temperature is 0.8 . Find the volume of 1.5 M sodium thiosulphate solution required to react completely with the iodine present at equilibrium in acidic condition, when 0.135 mol each of `H_2 and I_2` are heated at 440k in a closed vessel of capacity 2.0 L .

Explanation

To solve the problem step by step, we will follow these steps:

### Step 1: Understanding the Reaction
The reaction we are dealing with is:
\[ H_2 + I_2 \rightleftharpoons 2 HI \]

### Step 2: Initial Moles
Given that we start with 0.135 moles of \( H_2 \) and \( I_2 \) each in a closed vessel of 2.0 L, we can calculate the initial concentrations:
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