Find `Delta`H of the following reaction : `OF_(2) (g) + H_(2)O(g) rarr O_(2)(g) + 2 HF (g)` , average bond energies of, O – H, O = O, H – F , O – F, are 111, 118, 135 and 44 kcal/mol respectively

Find DeltaH of the following reaction: OF_(2)(g) +H_(2)O(g) rarr O_(2)(g)+2HF (g) , average bond energies of O -F, O-H, O =O , and H - F are 44,111, 118 , and 135 kcal mol^(-1) , respectively.

Find Delta_(r )H of the reaction : OF_(2)(g)+H_(2)O(g)rarr O_(2)(g)+2HF(g) , Average bond energies of O-F, O-H, O=O, H-F are 44, 111, 118 and 270 kcal/mol respectively.

In the reaction 2H_(2)(g) + O_(2)(g) rarr 2H_(2)O (l), " "Delta H = - xkJ

Calculate the enthalpy change (Delta H) of the following reaction 2C_(2)H_(2)(g)+5O_(2)(g)rarr4CO_(2)(g)+2H_(2)O(g) given average bond enthalpies of various bonds, i.e., C-H,C-=C,O=O,C=O,O-H as 414,814,499,724 and 640 kJ mol^(-1) respectively.

Calculate heat of the following reaction at constant pressure, F_(2)O(g)+H_(2)O(g)rarrO_(2)(g)+2HF(g) The heats of formation of F_(2)O(g),H_(2)O(g) and HF(g) are 5.5 kcal-57kcal and -64 kcal repectively.

Calculate the standard enegry change for the reaction: OF_(2)(g) +H_(2)O(g) rarr O_(2)(g) +2HF(g) at 298K The standard enthalpies of formation of OF_(2)(g), H_(2)O(g) , and HF(g) are +20, -250 , and -270 kJ mol^(-1) , respectively.