What has more enthalpy?

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Abbey Kerscher 3O
Posts: 24
Joined: Fri Jul 22, 2016 3:00 am

What has more enthalpy?

Postby Abbey Kerscher 3O » Fri Feb 03, 2017 1:10 pm

How do you find which molecule has a greater enthalpy? Does is just matter based on the state of the molecule or does it have to do with heat?

Simon Kapler 3I
Posts: 15
Joined: Mon Sep 26, 2016 3:01 am

Re: What has more enthalpy?

Postby Simon Kapler 3I » Fri Feb 03, 2017 1:57 pm

Enthalpy is really a measure of the energy contained within a system, not individual particles. It depends on the energies of the molecules within the system, which naturally has to take into account both the state of matter (ex. gasses inherently have more kinetic energy than solids) and the temperature of the particles within the system. Temperature is basically the average kinetic energy of the particles in the system, but it doesn't really make sense to think of enthalpy in this way. However, enthalpy may decrease when heat is lost by a system (like in an exothermic reaction), and vice versa.

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