Concept of enthalpy

Concepts

Introduction || Enthalpy of Reaction || Enthalpy of Formation || Calculation of Enthalpy of Reaction from Enthalpies of Formation || Hess’s Law || Enthalpy of Combustion

Enthalpy change of Atomisation | Bond enthalpy and Bond Dissociation Enthalpy | Standard Enthalpy change of Phase Transformation | Standard Enthalpy change of lattice and Ionisation | Standard Electron Gain Enthalpy | Standard Enthalpy Change of Solution

Briefly explain the concept of heat and concept of temperature.

Why is the enthalpy of sublimation equal to the sum of enthalpy of fusion and enthalpy of vaporisation ?

Energy of an electron in the ground state of the hydrogen atom is -5.19 xx 10^(-19)Cal . Calculate the ionization enthalpy of atomic hydrogen in terms of Kcal//mol . Hint: Apply the idea of mole concept to derive the answer.

Energy of an electron in the ground state of the hydrogen atom is -2.18xx10^(-18)J . Callate the ionisation enthalpy of atomic hydrogen in terms of kJ mol^(-1) . Hint: Apply the idea of mole concept to derive the answer.

When is bond dissociation enthalpy equal to bond enthalpy?