Final answer:
The enthalpy value in the given reaction would be best termed as the standard enthalpy of reaction. This is because the enthalpy change that occurs specifically under standard conditions is called the standard enthalpy of reaction.
Step-by-step explanation:
The enthalpy value in the given reaction would be best termed as the standard enthalpy of reaction. This is because the enthalpy change that occurs specifically under standard conditions is called the standard enthalpy of reaction. The symbol used to represent standard enthalpy of reaction is ΔΗ. Standard heats of reaction can be calculated from standard heats of formation.