# Chem

posted by Erin

Calculate the enthalpy change in the reaction of H2 with F2 to produce HF. The H–H and F–F bond energies are 436 and 155 kJ/mol, respectively, and the H–F bond energy is 567 kJ/mol

H2 (g) + F2 (g) --> 2HF (g)

1. Erin

Ooops did not mean to post this twice!

2. DrBob222

dHrxn = (n*BE reactants) - (n*BE products)
BE = bond energy.

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