Difference between Heat and Enthalpy

[Audrey Banzali-Marks 1A]

Dr. Lavelle mentioned that enthalpy is a state property while heat is not. Why is that? What is the difference between heat and enthalpy?

[Michelle Zhang 1J]

Enthalpy is just heat under conditions of constant pressure.

[Mia Hansen 2I]

Enthalpy is the amount of heat released or absorbed at constant pressure and is a state property. Just heat is not a state property since we don't know that it is under a constant pressure.

[Fiona H 2E]

Heat is always the energy in transit, meaning it can cross the system boundaries whereas Enthalpy refers to the total heat content in a system.

[Noa Popko 3I]

Enthalpy is defined as how much heat is released or absorbed by a system at a constant pressure. This wont change no matter the transition and thus is a state function. On the other hand, heat is not a state function because it depends on the path taken.

[Natalie Coughlin 1I]

Enthalpy is different than heat as enthalpy is at a constant pressure and a state property.