Calculate the enthalpy change for the reaction `H_(2)(g) + Br_(2)rarr 2HBr (g)` Give that the bond enthalpies ofH-H,Br-Br and H-Br are435, 192 and 364kJ `mol^(-1)` respectively.

Explanation

To calculate the enthalpy change for the reaction

\[ H_2(g) + Br_2(g) \rightarrow 2HBr(g) \]

we will use the bond enthalpy values provided. The bond enthalpy is the energy required to break a bond in one mole of a substance in the gas phase.

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

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