mportance of the concept of enthalpy According to the first

Last updated: 6/30/2023

mportance of the concept of enthalpy According to the first law of thermodynamics AU q w q PAV considering only P V work At constant volume AV 0 AU 9v Thus at constant volume heat absorbed or released qv by the system is equal to the change in internal energy of the system So we can determine the change in internal energy in a chemical reaction at constant volume by determining the amount of heat that is exchanged in the reaction However reactions are seldom carried out at constant volume as it is difficult to maintain constant volume during most reactions