Negative Enthalpy

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Negative Enthalpy

Postby 504939134 » Sun Feb 02, 2020 9:46 pm

Why do things that fo to a lower energy level happen by themselves?

Emily Burghart 1k
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Re: Negative Enthalpy

Postby Emily Burghart 1k » Sun Feb 02, 2020 9:55 pm

Are you asking about spontaneous reactions?

Anish Natarajan 4G
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Joined: Thu Jul 25, 2019 12:16 am

Re: Negative Enthalpy

Postby Anish Natarajan 4G » Sun Feb 02, 2020 10:06 pm

Spontaneous reactions depend on whether or not the delta G is negative; since the equation for delta G is
deltaH-T(deltaS), then if the enthalpy is positive you can still have a negative delta G (and a spontaneous reaction) if the absolute value of T(deltaS) is greater than the enthalpy change

Joowon Seo 3A
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Re: Negative Enthalpy

Postby Joowon Seo 3A » Sun Feb 02, 2020 10:32 pm

They do not necessarily happen by themselves since enthalpy is a state function. It depends on the intermediate energy when going from the initial enthalpy to the final enthalpy.

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