4 concepts
Standard States and Standard Enthalpy Changes
The standard enthalpy of formation refers to the enthalpy change when one mole of a compound is formed from its elements.
Standard Enthalpy of Reaction
The standard enthalpy of reaction is the enthalpy change that occurs in a system when a chemical reaction transforms one mole of matter under standard conditions.
Hess's Law
Hess's Law sums the changes in enthalpy for a series of intermediate reaction steps to find the overall change in enthalpy for a reaction.
Heat of Solution
Heat of solution refers to the change in enthalpy when a solute is dissolved into a solvent.