Journal Entry:

When will ΔH_rxn also equal the ΔH_f of the product?

Learning Intentions

●     You will learn how to use table of enthalpies of formation to calculate standard enthalpy of reactions.

Closing Task:

You can calculate enthalpy of reaction using enthalpies of formation.

Content Standards being covered:

Chemical system undergo three main processes that change their energy: heating/cooling, phase transitions, and chemical reactions. (E.K. 5.B.3.)

At the particulate scale, chemical processes can be distinguished from physical processes because chemical bonds can be distinguished from intermolecular interactions. (E.K. 5.D.2)

 The net energy change during a reaction is the sum of the energy required to break bonds in the reactant molecules and the energy release in forming the bonds of the product molecules. The net change in energy may be positive for endothermic reactions where energy is required, or negative for exothermic reactions where energy is released. (E.K. 5.C.2)