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Topic 6.7 · Bond Enthalpies

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AP Chemistry · Topic 6.7: Bond EnthalpiesOpen topic

Practice question

Original PrepAtlas question. This is not an official College Board question.

Estimate ΔH for H2(g) + Cl2(g) → 2HCl(g). Average bond enthalpies are H–H 436, Cl–Cl 243, and H–Cl 431 kJ/mol of bonds. Use energy required for bonds broken minus energy released forming bonds.
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