Uploaded April 2017 | Updated September 2026, 11 minutes ago
Mr. Key explains that enthalpy of formation equations and their enthalpies can be used in place of Hess' Law to establish the overall enthalpy change for a target equation.
Please note that all questions, comments and critiques are welcome. However, because the primary purpose of these videos is educational for students/educators, the comments are moderated. Any comments that are deemed abusive, inappropriate, or unrelated to the topic matter will not be posted and the user potentially blocked.
Mr. Key explains that enthalpy of formation equations and their enthalpies can be used in place of Hess' Law to establish the overall enthalpy change for a target equation.
Please note that all questions, comments and critiques are welcome. However, because the primary purpose of these videos is educational for students/educators, the comments are moderated. Any comments that are deemed abusive, inappropriate, or unrelated to the topic matter will not be posted and the user potentially blocked.









