Calculate the heat change in the reaction,
`4NH_(3)(g)+3O_(2)(g)to2N_(2)(g)+6H_(2)O(l)`
at 298K given that heats of formation at 298K for `NH_(3)(g)` and `H_(2)O(l)` are `-46.0` and `-286.0kJ" "mol^(-1)` respectively.

Calculate the enthalpy change in the reaction, 4NH_(3) + 3O_(2) to 2N_(2) + 6H_(2) O at 298 K,given that the enthalpy of formation at 298 K for NH_(3) and H_(2)O are - 46.0 and - 286.0 KJ mol^(-1) respectively.

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.

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.

Changes in enthalpy for the reaction : 2H_(2)O_(2)(g) rarr 2H_(2)O (l) + O_(2)(g) if heat of formation of H_(2)O_(2)(l) and H_(2)O(l) are -188 kJ mol^(-1) and -286 kJ mol^(-1) respectively is

Calculate the standard free energy change for the reaction, 4NH_(3(g))+5O_(2(g))rarr4NO_((g))+6H_(2)O_((l)) . Given that the standard free energies of formation (Delta_(f)G^(0)) for NH_(3(g)),NO_((g))andH_(2)O_((l)) are - 16.8, + 86.7 and - 237.2 KJ mol^(-1) respectively. Predict the feasiblity of the above reaction at the standard state.

Calculate enthalpy of the reaction : 4NH_3(g) +3O_2(g) rarr 2N_2(g)+ 6H_2O (I) at 298K, given /_\H_f for , NH_3 (g) , H_2O (I) are - 46 k J / mol and -286 k J per mol respectively.

The enthaply change (Delta H) for reaction, N_(2) (g) + 3H_(2)(g) to 2NH_(3) (g) is 92.38 kj at 298 K. What is Delta U at 298 K ?

The enthalpy change (DeltaH) for the reaction, NH_(2(g))+3H_(2(g)) rarr 2NH_(3g) is -92.38kJ at 298K What is DeltaU at 298K ?

Change in enthalpy for reaction 2H_(2)O_(2)(l)rarr2H_(2)O(l)+O_(2)(g) if heat of formation of H_(2)O_(2)(l) and H_(2)O(l) are -188 and -286KJ//mol respectively is