- "Thermochemistry is the study of the heat energy which is associated with chemical reactions and/or phase changes such as melting and boiling."
The study of the heat energy changes associated with chemical reactions.
Heat and Temperature: Introduction to the concepts of heat and temperature, and their role in thermodynamics.
Enthalpy: Definition of enthalpy and its measurement, including enthalpy change during chemical reactions.
Calorimetry: Different types of calorimeters and their use in measuring enthalpy changes.
Hess's Law: Explanation of Hess's Law and its application in the calculation of enthalpy changes.
Standard Enthalpy of Formation: Definition of standard enthalpy of formation and its use in determining enthalpy changes.
Bond Energy: Introduction to bond energy and its role in determining enthalpy changes in chemical reactions.
Stoichiometry: Understanding the role of stoichiometry in thermodynamics and how it relates to enthalpy changes.
Gibb's Free Energy: Definition of Gibb's free energy and its use in determining thermodynamic feasibility of chemical reactions.
Spontaneity: Introduction to the concept of spontaneity and how it relates to thermodynamics.
Reaction Kinetics: Understanding how thermodynamics and kinetics are related, and the role of kinetics in thermochemistry.
Enthalpy: The heat exchanged during a chemical reaction at constant pressure is called enthalpy. It is represented by the symbol ΔH.
Heat of Formation: The heat of formation is the enthalpy change which takes place when one mole of a compound is formed from its constituent elements in their standard states.
Heat of Combustion: The heat of combustion is the enthalpy change which takes place when one mole of a substance undergoes complete combustion with oxygen to form water and carbon dioxide.
Heat of Neutralization: The heat of neutralization is the enthalpy change which takes place when one mole of an acid reacts with one mole of a base to form one mole of water and a salt.
Heat of Solution: The heat of solution is the enthalpy change which takes place when a solute is dissolved in a solvent.
Heat of Reaction: The heat of reaction is the enthalpy change which takes place during a chemical reaction. It can be endothermic or exothermic.
Standard Enthalpy of Formation: The standard enthalpy of formation of a compound is the enthalpy change which takes place when one mole of the compound is formed from its constituent elements in their standard states.
Standard Enthalpy of Reaction: The standard enthalpy of reaction is the enthalpy change which takes place during a chemical reaction, when all the reactants and products are in their standard states.
Bond Enthalpy: Bond enthalpy is the enthalpy change which takes place when one mole of a covalent bond is broken. It is also called bond dissociation enthalpy.
Hess's Law: Hess's Law states that the enthalpy change between two states is independent of the path taken between those states.
- "Thermochemistry focuses on the energy exchange between a system and its surroundings in the form of heat."
- "Thermochemistry is useful in predicting reactant and product quantities throughout the course of a given reaction."
- "In combination with entropy determinations, it is also used to predict whether a reaction is spontaneous or non-spontaneous, favorable or unfavorable."
- "Endothermic reactions absorb heat, while exothermic reactions release heat."
- "Thermochemistry coalesces the concepts of thermodynamics with the concept of energy in the form of chemical bonds."
- "The subject commonly includes calculations of such quantities as heat capacity, heat of combustion, heat of formation, enthalpy, entropy, and free energy."
- "Thermochemistry is one part of the broader field of chemical thermodynamics."
- "Chemical thermodynamics deals with the exchange of all forms of energy between system and surroundings, including not only heat but also various forms of work, as well the exchange of matter."
- "When all forms of energy are considered, the concepts of exothermic and endothermic reactions are generalized to exergonic reactions and endergonic reactions."
- "Thermochemistry is the study of the heat energy which is associated with chemical reactions and/or phase changes such as melting and boiling."
- "In combination with entropy determinations, it is also used to predict whether a reaction is spontaneous or non-spontaneous, favorable or unfavorable."
- "Endothermic reactions absorb heat."
- "Thermochemistry coalesces the concepts of thermodynamics with the concept of energy in the form of chemical bonds."
- "The subject commonly includes calculations of such quantities as heat capacity, heat of combustion, heat of formation, enthalpy, entropy, and free energy."
- "Chemical thermodynamics deals with the exchange of all forms of energy between system and surroundings, including not only heat but also various forms of work, as well the exchange of matter."
- "When all forms of energy are considered, the concepts of exothermic and endothermic reactions are generalized to exergonic reactions and endergonic reactions."
- "Thermochemistry is useful in predicting reactant and product quantities throughout the course of a given reaction."
- "Exothermic reactions release heat."
- "Thermochemistry is useful in predicting reactant and product quantities throughout the course of a given reaction."