Chapter 18: Problem 27
Using the data provided, calculate the multiple bond energy \(\left(\mathrm{kJ} \mathrm{mol}^{-1}\right)\) of a \(\mathrm{C} \equiv \mathrm{C}\) bond in \(\mathrm{C}_{2} \mathrm{H}_{2}\). That energy is (take the bond energy of a C \(\mathrm{H}\) bond as \(350 \mathrm{~kJ} \mathrm{~mol}^{-1}\).) \(2 \mathrm{C}(\mathrm{s})+\mathrm{H}_{2}(\mathrm{~g}) \longrightarrow \mathrm{C}_{2} \mathrm{H}_{2}(\mathrm{~g}) \quad \Delta H=225 \mathrm{~kJ} \mathrm{~mol}^{-1}\) $$ 2 \mathrm{C}(\mathrm{s}) \longrightarrow 2 \mathrm{C}(\mathrm{g}) \quad \Delta H=1410 \mathrm{~kJ} \mathrm{~mol}^{-1} $$ \(\mathrm{H}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{H}(\mathrm{g}) \quad \Delta H=330 \mathrm{~kJ} \mathrm{~mol}^{-1}\) (A) 1165 (B) 837 (C) 865 (D) 815
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