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Basics of thermometric titration
In thermometric titration the reaction enthalpy is used to follow the chemical reaction.
Every chemical reaction is accompanied by a change in enthalpy (ΔH). The following equation applies.
ΔH = ΔG + TΔS, where
As long as the reaction takes place, this results in either an increase (exothermic reaction) or decrease (endothermic reaction) in the temperature of the sample solution. For a simple reaction this means that the increase or reduction in temperature depends on the converted amount of substance.
The result is that in a thermometric titration a change in temperature can only be observed as long as the added titrant reacts with the analyte in the sample solution.