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Enthalpy Changes

Experiment #9 from Investigating Chemistry through Inquiry

Education Level
High School


The heat absorbed or released during a chemical reaction is equal to the enthalpy changeH) for the reaction, at constant pressure. Calorimetry is the measurement of heat absorbed or released during chemical and physical processes.


In the Preliminary Activity, you will gain experience using a Temperature Probe and a calorimeter as you determine the enthalpy change as a hydrochloric acid solution is neutralized by a solution of sodium hydroxide.

After completing the Preliminary Activity, you will first use reference sources to find out more about heat, enthalpy, enthalpy changes, and calorimetry before you choose and investigate a researchable question involving enthalpy changes.

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

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This experiment is #9 of Investigating Chemistry through Inquiry. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

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