## Enthalpy and Heat

$\Delta U=q+w$

Jessica Castellanos
Posts: 102
Joined: Sat Aug 24, 2019 12:17 am
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### Enthalpy and Heat

Can someone explain to me the difference between enthalpy and heat? Are they both transfer of heat?

Eugene Chung 3F
Posts: 142
Joined: Wed Nov 15, 2017 3:03 am

### Re: Enthalpy and Heat

heat is the energy transferred from high temperature to lower temperature whereas enthalpy is heat transfer at a constant pressure. The heat added or lost from system gives the change of enthalpy.

Matthew Chan 1B
Posts: 111
Joined: Sat Sep 07, 2019 12:16 am

### Re: Enthalpy and Heat

Heat is the form of energy transfer from a one temperature to another, like from hot to cold. Enthalpy is the heat transfer at a constant pressure. So the heat added or lost by the system is the enthalpy change.

Posts: 81
Joined: Fri Sep 28, 2018 12:28 am

### Re: Enthalpy and Heat

Matthew Chan 1B wrote:Heat is the form of energy transfer from a one temperature to another, like from hot to cold. Enthalpy is the heat transfer at a constant pressure. So the heat added or lost by the system is the enthalpy change.

Would constant pressure be the only necessary criteria for calculating enthalpy?