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General Chemistry

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Bond Dissociation Energy and Reaction Enthalpy

CHEM-F3L4Y6

Consider the following reaction:

$$2{H}_{2} (g) + {O}_{2} (g) \rightarrow 2{H}_{2}{O} (g), \Delta H = -484\ kJ$$

Using the bond dissociation energies provided in the table, calculate the bond dissociation energy for the O=O double bond.

bond dissociation energy ($\frac{kJ}{mol})$
H-H 436
O-H 463
O=O ?
A

1464 $\frac{kJ}{mol}$

B

-430 $\frac{kJ}{mol}$

C

538 $\frac{kJ}{mol}$

D

496 $\frac{kJ}{mol}$