It is possible to calculate the value of `DeltaH` for the reaction
`H_(2)(g) +Br_(2)(l) rarr 2HBr(g)` from the bond enthalpy data alone.

Use standard enthalpies of formation to calculate the value of Delta_(r )H^(Θ) for the reaction 2H_(2)S(g) + 3O_(2)(g) rarr 2H_(2)O(l) + 2SO_(2)(g)

The net enthalpy change of a reaction is the amount of energy required to break all the bonds in reactant molecules minus amount of energy required to form all the bonds in the product molecules. What will be the enthalpy change for the following reaction ? H_(2) (g) + Br_(2) (g) rarr 2HBr (g) . Given that, bond energy of H_(2), Br_(2) and HBr is 435 kJ mol^(-1), 192 kJ mol^(-1) and 368 kJ mol^(-1) respectively

At standard conditions, if the change in the enthalpy for the following reaction is -109KJ mol^(-1) H_2(g) + Br_2(g) rarr 2HBr(g) Given that bond energy of H_2 and Br_2 is 435kj mol^(-1) and 192kj mol^(-1) , respectively. What is the bond energy of HBr ?

Using the bond enthalpy data given below, calculate the enthalpy change for the reaction C_(2)H_(4)(g)+H_(2)(g)rarrC_(2)H_(6)(g) {:("Data":,"Bond",,"Bond enthalpy",),(,C-C,,336KJmol^(-1),),(,C=C,,606KJmol^(-1),),(,C-H,,410KJ mol^(-1),),(,H-H,,431KJ mol^(-1),):}

Use the bond enthalpies listed below to estimate the enthalpy change for the reaction H_(2)(g)+Br_(2)(g)rarr2HBr(g) Given: BE of H_(2), Br_(2) , and HBr is 435, 192 , and 372 kJ mol^(-1) , respectively.

For the reaction : H_(2(g))+Cl_(2(g))rarr 2HCl, DeltaH=-"44 kcal" What is the enthalpy of decomposition of HCl?

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

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.

The enthalpy change for the reaction, C_(2)H_(6)(g)rarr2C(g)+6H(g) is X kJ. The bond energy of C-H bond is :

For the reaction 2H(g)rarr H_(2)(g) , the sign of DeltaH and DeltaS respectively are :