Enthalpy and States

[Tamera Scott 1G]

Does the state of matter affect the enthalpy?

[Rhay Flores 4K]

Enthalpy is heat absorbed or released at a constant pressure. Also, enthalpy is a state property so its specific value would be dependent on its current state, specifically the final minus the initial.

[Kevin ODonnell 2B]

Yes the state of matter will affect the enthalpy. A liquid of a substance will have a different enthalpy than a gas of the same substance.

[Kyither Min 2K]

Yup! Enthalpy is related to states and the enthalpy change of one state will be different than the enthalpy change of a different state.

[Eric Quach 1C]

State of matter does affect enthalpy. The value of enthalpy between liquid water and vapor will be different.

[LedaKnowles2E]

The enthalpy of a substance in its gaseous form > enthalpy in liquid form > enthalpy in solid form.
This is because heat is required to change a substance from solid to liquid, and liquid to gas.

[Riley Dean 2D]

Yes, when calculating net enthalpy change, you will have to take into account enthalpy changes between states of matter

[Aleeque Marselian 1A]

Yes the state of matter will definitely affect enthalpy because different amounts of heat are required to change a substance through each phase.

[KHuang1L]

State does affect enthalpy. That is why you need to add the enthalpy of the phase change for reactions where there is a phase change.