Thermo-chemistry Topical outline

Thermo-chemistry Definitions

Energy . System Surrounding

Heat Enthalpy Calorimeter

(B) Heat capacity

(C)Specific heat

(C) Heat of reaction

Energy- capacity of a system to do work or supply heat

System- a reaction or process being studied

Surroundings- everything outside of the system

heat- energy transferred as a result of a temperature difference between system and surroundings

Enthalpy(H) (heat content) Heat of reaction transferred at constant pressure it is consider differentiate property for any matter

calorimeter -apparatus used to measure heat gain or loss

heat capacity(C) -amount of heat required to raise the temperature of a calorimeter by 1 C

specific heat - amount of heat required to raise the temperature of 1gm 1c its unit is (j/g c*) C= Q x m

Specific heat for water is constant= 4.184(J/g c)

The lost or acquired heat (q) (q= c x ▲t)

Heat of reaction (Chem) the heat evolved or absorbed when one mole of a product is formed at constant pressure 

. An exothermic reaction is a chemical reaction that releases energy in the form of heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation