Preferred Label : thermometric titration;
IUPAC definition : An analytical method in which one reactant (the titrant) is added continuously or
stepwise to an adiabatic or isoperibol vessel containing another reactant. The enthalpy
change(s) of the ensuing reaction(s) causes a temperature change which, when plotted
versus volume of titrant, may be used to find the titration endpoint(s). This is the
preferred term for experiments producing plots of temperature versus volume of titrant
in which the main goal is a quantitative determination. Nonetheless, when a calorimetric
vessel is used, such that the heat capacity is known, thermodynamic parameters may
also be estimated from such experiments. An acceptable synonym in that case is enthalpimetric
titration. The use of the adjective thermometric is justified because of widespread
historical and current usage, and because a titration of necessity implies a chemical
reaction. The term thermometric enthalpy titration has been used, but is not recommended.
A method in which the titrant is a catalyst for an indicator reaction that occurs
after the endpoint for the analyte reaction should be called a thermometric titration
with catalytic endpoint detection, not a catalytic thermometric titration.;
Origin ID : T06331;
- See also
An analytical method in which one reactant (the titrant) is added continuously or
stepwise to an adiabatic or isoperibol vessel containing another reactant. The enthalpy
change(s) of the ensuing reaction(s) causes a temperature change which, when plotted
versus volume of titrant, may be used to find the titration endpoint(s). This is the
preferred term for experiments producing plots of temperature versus volume of titrant
in which the main goal is a quantitative determination. Nonetheless, when a calorimetric
vessel is used, such that the heat capacity is known, thermodynamic parameters may
also be estimated from such experiments. An acceptable synonym in that case is enthalpimetric
titration. The use of the adjective thermometric is justified because of widespread
historical and current usage, and because a titration of necessity implies a chemical
reaction. The term thermometric enthalpy titration has been used, but is not recommended.
A method in which the titrant is a catalyst for an indicator reaction that occurs
after the endpoint for the analyte reaction should be called a thermometric titration
with catalytic endpoint detection, not a catalytic thermometric titration.