Energy that must be supplied in the form of heat to keep a system at constant temperature and pressure during a reaction.
The heat of reaction describes the 'enthalpy' which is given off or absorbed during a reaction. If the pressure of the reaction remains constant, you can think of enthalpy as simply being heat.
the heat released or absorbed during a chemical change; equivalent to the change in enthalpy, ΔH, when the change takes place in the amounts indicated by the thermochemical equation.
The change in the enthalpy of the system that occurs when a reaction is run at constant pressure.
is the heat evolved or absorbed as a result of the complete chemical reaction of molar amounts of the reactants.
The heat change which occurs when a reaction takes place according to a given chemical equation.
The amount of heat given off during NanoFoil®’s chemical reaction, measured in units of joules per gram (J/g) or joules per mole (J/mol). The heat of reaction is independent of the amount of NanoFoil®.
the amount of heat absorbed or evolved when specified amounts of compounds react under constant pressure. [Expressed as kilojoules per mole. For exothermic reactions the convention is that the enthalpy change (heat of reaction) is negative.
