Science > Chemistry > Chemical Thermodynamics and Energetics > Change in Internal Energy and Enthalpy In this article, we shall study to calculate the change in internal energy and change in enthalpy in a chemical reaction. Example – 01: For a particular reaction, the system absorbs 6 kJ of heat and does 1.5 kJ of […]
Science > Chemistry > Chemical Thermodynamics and Energetics > Bond Enthalpy In this article, we shall study the concept of bond enthalpy. During the formation of the bond, energy is evolved or released. Thus the bond formation reaction is exothermic. Due to the release of energy molecule formed is at a low energy level and […]
Science > Chemistry > Chemical Thermodynamics and Energetics > Enthalpy of a System The enthalpy of system is defined as the sum of the internal energy of the system and energy that arises due to pressure and volume. It is denoted by letter H. Mathematically, H = U + PV Where, H = Enthalpy U […]