Thermometric Titration for H2 Chemistry Paper 4: Temperature Graphs, Endpoint, and Enthalpy

Q: What is thermometric titration?
A: It is a titration where the endpoint is found from a temperature change rather than a colour change.

TL;DR
In thermometric titration, you add reagent in measured portions, record temperature after each addition, plot temperature against volume, and estimate the equivalence volume from the intersection of two graph trends. The practical marks come from temperature control, small volume increments near the endpoint, cooling correction, and ACE discussion of heat loss, probe lag, and mixing.

Quick thermometric map

• The endpoint comes from a graph, not an indicator: Record temperature after each volume added.
• Small increments improve endpoint precision: Use closer volume spacing near the expected intersection.
• ACE explains why the graph may shift: Discuss heat loss, probe lag, mixing, and cooling correction.

Concrete example: If readings jump from $\pu{20.0 cm3}$ to $\pu{30.0 cm3}$