​Calculate heat of the following reaction at constant pressure, F2O(g) + H2O(g) ------> O2 (g) + 2HF(g)
The heats of formation of F2O (g), H2O(g) and HF (g) are 5.5 kcal, –57.8kcal and 64.2 kcal respectively.
(A) 76.1 Kcal
(B) 11.9 Kcal
(C) 71.6 Kcal
(D) 91.1 Kcal

The question is Wrong...So please don't answer this question..
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