Bond Enthalpies
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5 Terms
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What is average bond enthalpy?
The breaking of 1 mol of covalent bonds in gaseous molecules
2
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What are the limitations of average bond enthalpy?
The actual bond enthalpy can vary depending on the chemical environment of the bond
3
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What is an exothermic reaction?
The energy required to break bonds is less than the energy released when forming new bonds
4
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What is an endothermic reaction?
The energy required to break bonds is greater than the energy released when forming new bodns
5
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How do you work out ΔrH involving gaseous molecules?
Total bond enthalpies in reactants - total bond enthalpies in products
Note 
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