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1. Question

Hydrogen fluoride (HF) is a very poisonous inorganic compound which can be synthesized from hydrogen and fluorine according to the following equation:

H₂ + F₂ → 2HF

What is the energy change for each mole of HF produced by this reaction? Relevant bond energies are shown below.

Bond	Bond Energy (kJ/mole)
F−F	154
H−H	432
H−F	565

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