1. Definitions and units

We feel it necessary to remind you of a few definitions, as well as the units and symbols we'll be using in this article.

• Calorimeter: according to Calvet, a calorimeter is a container in which thermal phenomena to be measured are produced.

• Adiabatic calorimeter: this type of calorimeter does not exchange heat with the outside world. The heat produced is used to raise the temperature of its contents: ΔH = CΔT.

• Isothermal calorimeter: the heat produced escapes to the outside (Bunsen type). It is used to melt the mass of material being measured.

• Isoperibolic calorimeter: this device is not strictly isothermal. The heat flow (Φ) exchanged between the reaction cell and the...