GEN CHEM 2 | Calorimetry, Specific Heat, and Heat Capacity

Calorimetry

• the measurement of heat changes within a chemical reaction or other physical processes

• is associated with determining the changes in energy of a system by measuring the heat exchanged with the surroundings

• Utilizes specific heat (s) and heat capacity (C)

Specific Heat

• denoted as s

• the amount of heat required to raise the temperature of one gram of the substance by one degree Celsius

• an intensive property

• Unit: J/g•ºC

Heat Capacity

• denoted as C

• the amount of heat required to raise the temperature of a given quantity of the substance by one degree Celsius

• an extensive property

• Unit: J/ºC

Formula Relating Specific Heat and Heat Capacity

C = ms

Formulas for Heat (q)

• q = ms∆T

• q=C∆T

where ∆T is ∆T = T_final - T_initial