In this lab experience, students will determine the enthalpy of a neutralization reaction involving hydrochloric acid and sodium hydroxide. NaOH is approximately –63 kJ/mol. In addition, students will determine the enthalpy of neutralization of a HCl solution with solid NaOH. They will find out that the latter process is also exothermic, with an enthalpy more negative than –63 kJ/mol, because it includes the enthalpy of dissolution of solid NaOH in water.
Safety:
Before conducting the lab, review the safety precautions on the student page with the class. Then discuss any safety precautions that are specific to your science laboratory or classroom.
Materials Included in Kit
Consumable:
Hydrochloric acid solution, 1.0 M, 1600 mL
Sodium hydroxide solution, 1.0 M, 800 mL
Sodium hydroxide flakes, 100 g
Polystyrene cups, package of 30
Weigh dishes, 20
1-800-452-1261
