4. Set-up ONLY the equation for determining the bond dissociation energy ΔH° for the hydrogenation of acetylene, C2H2 in the reaction below by showing what bonds are being broken (yes, draw Lewis Structures!) and what bonds are being formed:   H-C=C-H(g) + 2 H2(g) → CH3-CH3(g)

Explanation:

The balanced chemical reaction is:

The expression for enthalpy change is,

where,

n = number of moles

Thus the equation for determining the bond dissociation energy ΔH° for the hydrogenation of acetylene is

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