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3 cards from this section. Quick, good the night before a test.
What is bond enthalpy?
Remember it relates to the energy required for bond breaking.
Is ΔH for an exothermic reaction positive or negative?
Think about heat flow to the surroundings.
What is the bond enthalpy of a C≡C bond?
Recall the bond enthalpy values discussed in class.
An exothermic reaction results in a ΔH value that is:
Think about energy transfer in reactions.
Estimate the enthalpy change for the reaction: 2 H₂(g) + O₂(g) → 2 H₂O(g) using average bond enthalpies.
Remember to list the bonds broken and formed separately.
Explain the significance of bond enthalpies in real-world applications, such as fuel combustion.
Think about how different fuels have different energy releases upon burning.
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