What is the basic difference between enthalpy of formation and enthalpy of reaction? Illustrate with suitable examples.

What is the basic difference between enthalpy of formation and enthalpy of a reaction? Illustrated with suitable examples.

What is Sandmeyer reaction ? Illustrate with a suitable example.

(i) What is the difference betweenn the enthalpy of formation and the enthalpy of reaction? Explain with proper explain. (ii) what do you understand by the standard state of liquid benzene at 25^(@)C ?

Define heat (Enthalpy) of formation.

What is the basic difference between electron gain enthalpy and electronegativity ?

Explain the enthalpy of hydration with suitable example.

What is the basic difference between the electron gain enthalpy and electropositivity?

What is the basic difference between the terms electron gain enthalpy and electronegativity?