Formula for Heat of Reaction
Q = m × c × ΔT
Where,
- Q = Heat of Reaction,
- m = mass of medium,
- c = specific heat capacity of the reaction medium,
- ∆T = difference in temperature of the medium.
Besides we also have another equation as,
Heat of Reaction = ΔH (products) – ΔH (reactants)
Where,
- ΔH = change in heat value
Heat of Reaction Formula
The heat of reaction also known as Enthalpy of Reaction is the difference in the enthalpy value of a chemical reaction under constant pressure. It is the thermodynamic unit of measurement used to determine the total amount of energy produced or released per mole in a reaction. As a result, the heat of a chemical reaction may be defined as the heat released into the environment or absorbed while the reaction occurs at constant pressure and temperature. Joule (J) is the unit used to measure the total quantity of heat received or released.
In chemical reactions, heat is mostly transferred between the reacting system as one medium and the surrounding as the other one. Before and after the chemical transformation, the amount of heat energy is the same. In other words, the heat acquired or lost in a reacting system is equivalent to the heat gained or lost in the surroundings.