Apologia Chemistry Module 13

Change in Enthalpy (&delt;H)

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Terms in this set (12)

Change in Enthalpy (&delt;H)

The energy change that accompanies a chemical reaction

The energy required to break a bond

Enthalpy is a state function and is therefore independent of path.

Any quantity that depends solely on the final destination, not on the way you get to that destination

Enthalpy of formation (&delt;Hf)

The delt;H of a formation reaction

Standard enthalpy of formation

The (H of a formation reaction at T = 298 K and P = 1.00 atm

Activated complex

Another name for the intermediate state of a chemical reaction

A diagram that shows the energy of the reactants, intermediate state, and products in a chemical reaction

Intermediate state

A complex formed in the process of a chemical reaction when the reactants and products are interacting

Activation energy

The energy necessary to start a chemical reaction