Calculate `DeltaH` of the reaction
`H - underset(Cl) underset(|) overset(H) overset(|) (C ) - Cl(g) rarr C(g) +2H(g) + 2Cl(g)`
The average bond energies of C-H bond and C-Cl bond are 416kJ and 325 kJ `mol^(-1)` respectively.

Explanation

To calculate the change in enthalpy (ΔH) for the reaction:

\[ \text{H}_2\text{Cl}_2(g) \rightarrow \text{C}(g) + 2\text{H}(g) + 2\text{Cl}(g) \]

we will use the average bond energies provided for the C-H and C-Cl bonds.

### Step 1: Identify the bonds broken and formed

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