Thermochemistry

Amounts of reactants influences the change in temperature and the heat exchanged during an acid-base neutralization reaction, HCl(aq) + NaOH(aq), but the value for the change in enthalpy is constant.

Heat of Neutralization: The initial temperature of 50.0 mL of 3.0 M HCl and a 3.0 M NaOH are measured using a digital thermometer probe. The HCl and NaOH react a calorimeter. The final temperature of the resultant solution is measured. The heat exchanged between the chemcial reaction and the solution is calculated. The change in enthalpy of the reaction, ∆H, the heat of neutralization is determined.

Comparing specific heats of metals, a guided-inquiry investigation. Two metal samples (Al and Pb) have the same mass and the same intitial temperature are each placed in separate 50.0 grams of cool water at the same temperature. Which metal will raise the temperature of the 50 grams of water the most? The metal with the higher specific heat will release more heat as it cools and thus will raise the temperature of water more compared to a metal with a lower specific heat. This interactive demonstration focuses on helping students gain a better conceptual understanding of heat, temperature, and specific heat.

Combustion of Propane

A computer simulation designed to simulate a calorimeter experiment. Determine the heat of solution of a salt. Dissolving various substances in water, measure the mass of the salt, the intial temperature of the water, and the final temperature of the resultant solution.

Calorimetry: Hot Metal in Cold Water Heat Exchange Computer Simulation Old Flash-Based

NO2/N2O4 Equilibrium New Blender Computer Simulation

A short computer animation illustration how positive and negative ions in a solid ionic compound dissolve in water might be used to accompany the dissolving salts in water demonstration.