Define the terms : (i) Enthalpy of formation (ii) Enthalpy of combustion.

Explain the following terms: (i) Enthalpy of formation (ii) Enthalpy of combustion (iii) Enthalpy of phase transition.

Define in terms : (i) Enthalpy of fusion (ii) Enthalpy of sublimation (iii) Enthalpy of vaporisation.

Define the terms:- Enthalpy of sublimation.

Define the following terms : (a) Enthalpy of fusion Enthalpy of atomization

Define : (a) Enthalpy of atomization (b) Enthalpy of vaporization

Define the following terms:- Enthalpy of ionisation

Calculate the enthalpy of formation of aniline. The enthalpy of combustion of aniline is 837.5 kcal mol^(-1) . The enthalpies of formation of liquid water and gaseous carbon dioxide are -68.4 and -97.0kcal mol^(-1) respectively. All values are at 298 K .

Enthalpy OF Formation || Enthalpy OF Combustion || Hess's law

Define the following terms:- Enthalpy of vaporization

Enthalpy of formation of compound is