When students complete the lab, instruct them how to clean up their materials and dispose of any chemicals.Students should wash their hands thoroughly before leaving the lab.Always wear safety goggles when handling chemicals in the lab.Spontaneous & Non-Spontaneous Reactions.This lab supports students’ understanding of Write thermochemical equations for the formation of solutions.Indicate the sign (positive or negative) of free energy if the enthalpy, entropy and temperature signs are known.Measure the changes in enthalpy of a reaction.Explain the difference between an endothermic and exothermic process in terms of temperature of system and surroundings.Define enthalpy, entropy and free energy.ENE-4.C: Explain whether a physical or chemical process is thermodynamically favored based on an evaluation of ∆G o.īy the end of this lab, students should be able to.Topic 9.3: Gibbs Free Energy and Thermodynamic Favorability.ENE-4.A: Identify the sign and relative magnitude of the entropy change associated with chemical or physical processes.ENE-2.A:Explain the relationship between experimental observations and energy changes associated with a chemical or physical transformation.Topic 6.1: Endothermic and Exothermic Processes.This lab supports the following units, topics, and learning objectives:
In this lab, students will be able to observe and measure energy changes during the formation of solutions.