Sophia Learning
Sophia: Enthalpy Calculation
This lesson will provide an example of calculating the total amount of energy required for water to change from a solid at a temperature below zero celsius to a gas at a temperature above 100 degrees. A labeled phase change diagram will...
Sophia Learning
Sophia: Define Enthalpy
This lesson will define enthalpy and introduce its symbol, providing examples of its use.
Bozeman Science
Bozeman Science: Calorimetry
Paul Andersen describes the history of calorimetry and explains how it can be used to measure energy changes in a system. The specific heat of water is well established and so as a system releases or absorbs energy from a surrounding...
Bozeman Science
Bozeman Science: Enthalpy of Reaction
Paul Andersen explains how the enthalpy of a reaction can be released in an exothermic or consumed in an endothermic reaction. According to Hess's law if the reaction is reversed the sign of the enthalpy of reaction is also reversed....
Sophia Learning
Sophia: Changes of State: Enthalpy: Lesson 2
This lesson will illustrate the energy changes that occur during changes of state by defining and using the concept of enthalpy. It is 2 of 2 in the series titled "Changes of State: Enthalpy."
Crash Course
Crash Course Chemistry #19: Calorimetry
This crash course episode dives into how enthalpy works. Learn how it is calculated and how it is determined experimentally. [11:57]
Khan Academy
Khan Academy: Chemistry: More Rigorous Gibb's Free Energy
A video lecture that derives the Gibb's free energy equation. The video starts by reviewing what a irreversible and reversible process is with explanations and diagrams. While describing irreversible and spontaneous process the formula...
Khan Academy
Khan Academy: Chemistry: Hess's Law Example
A video lecture showing a step by step procedure for solving a Hess's law problem from a textbook. The problem instructs students to find the enthalpy change using the heat of formation. [12:08]
Khan Academy
Khan Academy: Chemistry: Hess's Law and Reaction Enthalpy Change
A video lecture giving an explanation of Hess's law, the law of heat summation. Understand that whether the process takes places in one or several steps the heat released or absorbed in a chemical process is the same. The video also...
Khan Academy
Khan Academy: Chemistry: Enthalpy
A video lecture explaining enthalpy is the heat applied to a system if the pressure is constant in the system. Also explored is internal energy and when the pressure of a system would be constant. [15:07]
Khan Academy
Khan Academy: Chemistry
A video lecture that builds on previous knowledge of enthalpy to find out how much heat energy is either gained or lost in a reaction. By being able to predict how much heat it takes to produce certain products, it is explained to...
Khan Academy
Khan Academy: Chemistry: Gibb's Free Energy and Spontaneity
Understand the intuition to why Gibb's free energy equation can predict whether a reaction is spontaneous in this video lecture. The lecture goes through scenarios to show how a reaction may happen spontaneously based on enthalpy,...
Crash Course
Crash Course Chemistry #18: Enthalpy
A crash course episode introducing what the state function is, and how it varies from a path-dependent function; why enthalpy change is different from heat; and the fact that bonds are energy and to form and break them they release and...
Learn Engineering
Learn Engineering: First Law of Thermodynamics for an Open System
Explores applications of the first law of thermodynamics.
Khan Academy
Khan Academy: Bond Enthalpy and Enthalpy of Reaction
Introduction to bond enthalpy, and how to use bond enthalpies to calculate enthalpy of reaction. [11:46]
Khan Academy
Khan Academy: Calorimetry and Enthalpy Introduction
A Crash Course Chemistry video reviewing over the HOW of enthalpy. Learn how enthalpy is calculated, and how it is determined experimentally. [11:05]