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Chemistry

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Reaction of gaseous ClF with F2 yields liquid ClF₃, an important fluorinating agent. Use the following thermochemical equations to calculate ΔH°rxn for this reaction:
(1)2CIF(g) + O₂(g) → Cl₂O(g) + OF₂(g) ΔH°rxn = 167.5kj
(2) 2F₂(g) + O₂(g) → 2OF₂(g) ΔH°rxn = -43.5kj
(3) 2ClF₃(l) + 2O₂(g) → Cl₂O(g) + 3OF₂(g) ΔH°rxn = 394.1kj

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