On the Evaluation of Adiabatic Experiments

In adiabatic calorimeter, it is unavoidable that a part of the heat released by the sample serves to heat the crucible or the calorimetric vessel. Thus, a correction for 

In this equation, cw stands for the heat capacity of the calorimetric vessel. Traditionally, this correction was performed via the Water Equivalent of the calorimeter. This means that the heat capacity of the calorimetric cell is described by a thermally equivalent mass of water. 

When calculating the heat of reaction from an adiabatic experiment, the result must take the water equivalent into account  

Another way of correcting the results is to use the adiabacity coefficient ( J ) or thermal inertia of the cell  

Ideal adiabatic conditions correspond to a thermal inertia = 1. Under normal operating conditions, this factor lies between 1.05 and 8. The thermal inertia depends on the degree of filling of the cell. The temperature can be corrected by 

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