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.
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1. What is thermochemistry primarily concerned with?
2. What is the primary focus of thermochemistry?
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