3.2 moles of HI were heated in a sealed bulb at `444^(@)C` till the equilibrium was reached. Its degree of dissociation was found to be 20% . Calculate the number of moles of hydrogen iodide, hydrogen and iodine present at the equilibrium point and determine the value of equilibrium constant.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Write the balanced chemical equation
The dissociation of hydrogen iodide (HI) can be represented as:
\[ 2 \text{HI} \rightleftharpoons \text{H}_2 + \text{I}_2 \]

### Step 2: Determine the initial moles
Initially, we have:
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