Question #1300203

# Calculating ÎHÂ°rxn problem! - Chemistry?

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Oxidation of gaseous ClF by F2 yields liquid ClF3, an important fluorinating agent. Use the following thermochemical equations to calculate ÎHÂ°rxn for the production of ClF3.
(1) 2 ClF(g) + O2(g) â Cl2O(g) + OF2(g) ÎHÂ° = 167.5 kJ
(2) 2 F2(g) + O2(g) â 2 OF2(g) ÎHÂ° = -43.5 kJ
(3) 2 ClF3(l) + 2 O2(g) â Cl2O(g) + 3 OF2(g) ÎHÂ° = 394.1 kJ
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