Study List for Chapter 5 Enthalpy

Potential and Kinetic energy:

The student will be able to identify from a word problem which is kinetic and which is potential energy and solve for the problems using E_k=1/2mv², 1 kgm²/s =1 J and 1 cal = 4.184 J.

System and Surroundings:

The student will recognize which is the system and which is the surrounding in a word problem, which is necessary to solve the first law of thermodynamics and calorimetry problems.

Work and Heat:  The student will be able to understand and use the formulas for work and heat:  W=F*d; F=m*g where g=gravity = 9.8m/s² and ∆E=q+w.   They will use these equations to solve word problems on the transfer of energy as work and/or heat.

First Law of thermodynamics: Students will be able to show mathematically on word problems that energy is conserved.  They will identify energy from a reaction is either in the system or the surroundings.

Endothermic Exothermic:  Students will identify endothermic or exothermic reactions in word problems and calculate the amount of energy gained or given off in these reactions.

 State Functions:  The student will recognize the difference between state function and the steps taken to arrive at that state function.

Enthalpy:  The student will be able to define the difference between heat, q and enthalpy ∆H which is the heat of a reaction under constant pressure.

Heat capacity:  The student will be able define and calculate the heat capacity and specific heat of a substance based on the information given in a word problem using the equation q=Cp*m*∆T.

Calorimetry:  In calorimetry reactions, the student will recognize that the Cp if a reaction  in dilute aqueous solutions is equal to water and that the heat gained from the solution is equal to the loss of heat form the reaction, q_solution=Cp*m*∆T=-q_rxn .

Bomb Calorimeter:  The student will be able to define and design on paper a bomb calorimeter and solve word problems using a bomb calorimeter for combustion reactions.

Hess’s Law:  The student will be able to derive the heat of a reaction using a summation of several known reactions and their heats.

Enthalpy of formation:  The student will be able to derive the standard heat of formation ∆H^◦_f  using information given and Hess’s Law.

Chapter 5 Worksheets                                                                                        Chapter 19 Entropy worksheets

Chapter 5 Study Questions                                                                                   Chapter 19 Study Guide

Chapter 5 Calorie Worksheet                                                                                Chapter 19 multiple choice questions

Chapter 5 Multiple choice questions                                                                       Chapter 19 Practice Test

Chapter 5 AP style question

PowerPoint Lectures

Thermochemistry                                                                                                       Chapter 19 Part I

Enthalpy & Calorimetry                                                                                              Chapter 19 Part II

Hess's Law & Standard Enthalpies of Formation                                                        Chapter 19 Part III

Standard Heats of Formation                                                                                      Chapter 19 Part IIII