Principle

Standard molar enthalpies of formation
ΔBHΦ are important compiled thermodynamics
tabulation quantities for calculating standard enthalpies of
reaction for any arbitrary reaction. They are defined as the heat
of reaction occurring in the direct formation of one mole of the
pertinent pure substance from the stable pure elements at constant
pressure. For spontaneous and quantitative formation reactions,
e.g. the conversion of hydrogen and oxygen to water, standard
enthalpies of formation can be measured directly using
calorimetry.

Tasks

Determine the enthalpy of formation of water by burning 100 ml
H2 in a closed glass jacket calorimeter.

What you can learn about


First law of thermodynamics

Thermochemistry

Calorimetry

Enthalpy of formation

Enthalpy of reaction


Necessary accessories


Precision balance 620g/0.001g