Flashcards: Fundamentals of Thermochemistry — 10 cartões

Thermochemistry — definition?

Study of heat changes during reactions.

Thermochemistry — focus?

Heat changes during reactions and transformations.

System vs Surroundings — role?

System is studied; surroundings are everything else.

Enthalpy () — definition?

Total heat content at constant pressure.

Types of Systems — examples?

Open, closed, and isolated systems.

Exothermic reaction — ?

Releases heat,  < 0.

Endothermic reaction — ?

Absorbs heat,
> 0.

Calorimetry — purpose?

Measures heat transfer in reactions.

Standard Enthalpy of Formation?

Enthalpy change for forming 1 mol from elements.

Hess's Law — principle?

Path independence of  for reactions.