Calculate the `Delat_(r )H^(Θ)` for the reaction
`H-underset(Cl)underset(|)overset(H)overset(|)(C )-Cl(g)rarrC(g)+2H(g)+2Cl(g)`
[Use table given in Appendix for standard enthalpy of formation]

Explanation

To calculate the standard enthalpy change (ΔrH°) for the reaction:

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

we will use bond enthalpies to find the energy changes associated with breaking and forming bonds. Here’s the step-by-step solution:

### Step 1: Identify the bonds broken in the reactants
In the given reaction, we need to break the bonds in HCl. Each HCl molecule has one H-Cl bond. Since we have 2 moles of HCl in the reaction, we will break 2 H-Cl bonds.
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