Final answer:
The enthalpy of reaction, ΔHₙ, is the amount of thermal energy that flows when a reaction occurs at constant temperature. This statement is False.
Step-by-step explanation:
The enthalpy of reaction, ΔHÑ, is the amount of thermal energy that flows when a reaction occurs at constant temperature. This statement is False. The enthalpy change, ΔH, for a chemical reaction is a measure of the differences in enthalpy of the reactants and products. It is related to the heat of reaction, which is the energy absorbed or released during a reaction at constant pressure. Enthalpy changes can be expressed using thermochemical equations and are measured using calorimetry.