ΔH_rxn ≈
- A
Σ(bonds broken) + Σ(bonds formed)
- Bcheck_circle
Σ(bonds broken) − Σ(bonds formed)
- C
0
- D
Σ(bonds formed) − Σ(bonds broken)
Explanation
Breaking bonds requires energy (positive); forming bonds releases energy (negative).
Bond Enthalpies
AP Chemistry· difficulty 3/5
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