Calorimetry

Measurement of heat absorbed or evolved during a chemical or physical change.

Usually determined by measuring the temperature change
of a substance with a known heat capacity (often water).

– q_change = q_water + q_calorimeter

                           = (mC_s(water) + C_calorimeter)ΔT

Bomb		Coffee cup
Constant Volume		Constant Pressure
w = –Pext ΔV = 0		w = –Pext ΔV
q = ΔU		q = ΔH
		ΔH = ΔU + PΔV "add back" E used to expand
Combustion reactions Ccalorimeter large		Specific Heats Solution Phase reactions Ccalorimeter small