AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

Enthalpy

AP Chemistry MIDTERM review D

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
Physical quantities
Sulfates
Desiccants
Solutions
Sodium compounds
Precipitation
solubility
Potassium chloride
Chemical reaction
Sodium sulfate
salt
Enthalpy

When water evaporates at constant pressure, the sign of the change in enthalpy: a. is negative b. is positive c. depends on the temperature d. depends on the volume of water e. does not exist because the enthalpy change is zero D 100 When water evaporates, the forces holding one water molecule to another water molecule (hydrogen bonds) must be broken. To break these connections, heat energy needs to be added. Therefore this is an endothermic process with a positive delta H. 1 D 200 D 300 2H2S + O2 ? 2S + 2H2O If 102 g of H2S are combined with 64 g of O2, what is the maximum mass of elemental sulfur that could be produced by the reaction? D 400 Fe2O3 + 3CO ? 2Fe + 3CO2

AP Chemistry MIDTERM review B

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
Inorganic solvents
Oxides
Bases
Enthalpy
Titration
Properties of water
water
Hydroxide
Enthalpy of vaporization
Distillation

An acid solution of unknown concentration is to be titrated with a standardized hydroxide solution that will be released from a buret. The buret should be rinsed with: hot distilled water distilled water at room temperature a sample of the unknown acid solution a sample of the hydroxide solution a neutral salt solution B 100 B 200 B 300 B 400 As a beaker of water is heated over a flame, the temperature increases steadily until it reaches 373K. At that point, the beaker is left on the flame, but the temperature remains at 373 as long as there is water in the beaker. This is because at 373K, the energy provided by the flame: no longer acts to increase the kinetic energy of the water molecules is completely absorbed by the glass beaker

AP Chemistry Zumdahl 7E Chapter 16 Notes

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
State functions
Thermodynamic entropy
Chemical thermodynamics
thermodynamics
Thermochemistry
Spontaneous process
Entropy
Hess's law
Standard molar entropy
gibbs free energy
Enthalpy
Chemical reaction

1 Chapter 16 - Spontaneity, Entropy, and Free Energy 16.1 Spontaneous Processes and Entropy A. First Law 1. "Energy can neither be created nor destroyed" 2. The energy of the universe is constant B. Spontaneous Processes 1. Processes that occur without outside intervention 2. Spontaneous processes may be fast or slow a. Many forms of combustion are fast b. Conversion of diamond to graphite is slow C. Entropy (S) 1. A measure of the randomness or disorder 2. The driving force for a spontaneous process is an increase in the entropy of the universe 3. Entropy is a thermodynamic function describing the number of arrangements that are available to a system a. Nature proceeds toward the states that have the highest probabilities of existing D. Positional Entropy

AP Chemistry Zumdahl 7E Chapter 6 Notes

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
Thermochemistry
Chemical thermodynamics
Thermodynamic processes
Physical chemistry
Chemistry
Enthalpy
Standard enthalpy of formation
Exothermic reaction
Hess's law
Exothermic process
Calorimeter
Endothermic process

AP Chemistry A. Allan Chapter Six Notes - Thermochemistry 6.1 The Nature of Energy A. Definition 1. Energy is the capacity to do work (or to produce heat*) a. Work is a force acting over a distance (moving an object) b. *Heat is actually a form of energy. (1) chemicals may store potential energy in their bonds that can be released as heat energy B. Law of Conservation of Energy 1. Energy can be converted from one form to another, but cannot be created or destroyed a. Potential energy (1) energy due to position or composition b. Kinetic energy (1) energy due to the motion of an object (2) vmKE 22 1= C. Heat and Temperature 1. Temperature reflects random motion of particles in a substance 2. Temperature indicates the direction in which heat energy will flow

inorganic chemistry lab report: Calorimeter – the science of measuring Heat

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
Physical quantities
Calorimetry
Laboratory equipment
Heat transfer
thermodynamics
Calorimeter
Measuring instrument
Heat
Properties of water
Enthalpy
First law of thermodynamics
Temperature

Liu1 Experiment 8: Calorimeter ? the science of measuring Heat Objective: The objective of this experiment is to determine the specific heat capacity of an unknown metal and the heat of solution for the salt. Method: A calorimeter is a device used for calculate the enthalpy change of reaction, the science of measuring the heat of chemical reactions or physical change as well as heat capacity. The heat capacity of an object is the amount of heat needed to raise the temperature by 1K (or 1?C). The heat capacity of one gram of a substance is called its specific heat capacity.

Energy Notes

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
State functions
Physical quantities
Heat transfer
Enthalpy
thermodynamics
Calorimeter
Properties of water
Heat capacity
Enthalpy of vaporization
Heat
Chemical reaction
energy

preAP Chem 2013-2014 1 NOTES: Energy in Chemical Processes Name ______________________________ Period ________ Energy and Heat ? Energy is defined as the ability to do _________ or produce ___________; the sum of all potential and kinetic energy in a system is known as the internal energy of the system. It comes from the energy stored in ____________ (______________ energy) and from the ____________ of atoms and molecules (______________ energy). ? Heat is defined as the ______________ of energy from a warmer object to a cooler object. Do not confuse the terms heat and temperature. Heat is the _____________ of the energies of the molecules

Chapter 7

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
Chemistry
Physics
thermodynamics
State functions
Chemical engineering
Thermochemistry
Chemical properties
Calorimeter
Heat
Exothermic
Enthalpy
energy
Environment
behavior
Human development
Interpersonal relationships
Love
Psychoanalysis
Human behavior
Attachment theory
Evolutionary biology
Personal life
Technology

Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 18 October 2012 Brady, Jespersen, Hyslop Chapter 7 Energy & Chemical Change Thermochemistry: the study of energy flow during a chemical reaction Ch. 7.1 Energy: the ability to do work; often measured as heat Kinetic Energy: the energy of motion; KE = ?mv2 Potential Energy: stored or positional energy; chemical energy (no simple eqn.) Conservation of Energy: 1. Energy cannot be created or destroyed 2. Energy is only converted from one form to another (KE ? PE) 3. Total energy of the universe (or an isolated system) is constant Thermochemistry: Basic Definitions Units of Energy 1 Joule (J) ? the KE possessed by a 2 kg object moving at a velocity of 1 m/s 1 cal = 4.184 J (exactly) 1 kcal = 4.184 kJ

Chapter 10

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
Chemistry
Thermodynamic properties
Chemical engineering
Materials science
Phase transitions
Enthalpy
Enthalpy of vaporization
Vapor pressure
Phase
Enthalpy of fusion
Dipole
Evaporation

Chapter 10 notes Claire Rafson 10.1-10.2 Intermolecular forces- occur b/w not in molecules. From solid to liquid to gas molecules remain in tact Forces: Dipole-dipole forces are forces that act between polar molecules Hydrogen bonding- strong form of dipole dipole with H and NOF London Dispersion- Present in all but ionic . noble gas and nonpolar and Polar. Big atom with a lot electrons LD can be stronger than dipole dipole Higher IMF = higher: surface tension, boiling/meltin point. Lower: vapor pressure Capillary action- polar liquids typically exhibit it 10.3- crystalline solids- highly regular arrangement of their components ionic and molecular amorphous solids- considerable disorder 10.5- Network atomic Solids- giant molecule Strong covalent bonds Silica- SiO2

Chapter 5 Thermochemistry

Subject: 
Chemistry
Rating: 
0
No votes yet
Tags: 
Physics
thermodynamics
Chemistry
State functions
Thermochemistry
Enthalpy
energy
Heat
Exothermic
internal energy
Thermal energy
Thermodynamic system
Environment

Chapter 5: Thermochemistry ?Introduction- Energy is defined as the capacity or the ability the to do work i.e. in order to do work energy must be involved Mathematically Represented- Work or Energy = Force x Distance The view of energy can be thought of as physical in nature and contact via the exerted force Chemistry, however, must view energy differently. The study of energy and its transformation, as it applies to chemistry, is know as THERMOCHEMISTRY, along with spontaneity, the two are referred to as THERMODYNAMICS Section 5.1- Nature of Energy The study of chemistry and thermodynamics will involve the concepts of energy, work, and heat KINETIC and POTENTIAL Energy Kinetic ? energy due to an objects motion

Hess's Law

Subject: 
Chemistry
Rating: 
0
No votes yet
SocialTags: 
Chemistry
hess
hess's
Law
internal
Energy
Tags: 
Chemistry
Enthalpy
water
Thermochemistry
Hess's law
hess's
law
internal energy

Notes Enthalpy / Hess?s Law 2/13/13 CH 4(g) + 2O 2(g) ? CO 2(g) + 2H 2 O (g) ?H? rxn =? ?H? rxn = ??H? f products - ??H? f reactants Electron Affinity: Energy change associated with adding electrons to atoms (anions) Ionization Energy: Energy change associated with removing electrons from atoms (cations) Methods for calculating ?H rxn Hess?s Law: if a reaction can be written as the sum of two or more steps the overall enthalpy of reaction is equal to the sums of the enthalpies of reaction for each of the steps A + B ? G + H ? ?H rxn =? A + B ? C + D ? ?H rxn = x KJ C + D ? E + F ? ?H rxn = y KJ E + F ? G + H ? ?H rxn = z KJ +___________ A + B ? G + H ? ?H rxn = x + y + z KJ
Subscribe to RSS - Enthalpy

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!