Enthalpy of Sublimation

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Angela Velazquez 1J
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Joined: Fri Sep 25, 2015 3:00 am

Enthalpy of Sublimation

Postby Angela Velazquez 1J » Thu Jan 07, 2016 9:52 pm

In the notes under Enthalpy of Sublimation (pg 17) it says the temperature of the sample remains constant even though heat is being supplied, can anyone explain why that is?

Stefanie Bui 1J
Posts: 31
Joined: Fri Sep 25, 2015 3:00 am

Re: Enthalpy of Sublimation

Postby Stefanie Bui 1J » Thu Jan 07, 2016 9:56 pm

I think this is because the heat is being used to break the bonds, not increase the temperature.
Last edited by Stefanie Bui 1J on Thu Jan 07, 2016 11:17 pm, edited 1 time in total.

Ranger Saldivar 2D
Posts: 28
Joined: Fri Sep 25, 2015 3:00 am

Re: Enthalpy of Sublimation

Postby Ranger Saldivar 2D » Thu Jan 07, 2016 10:07 pm

I'm pretty sure it relates to phase changes, such as water, in order for it to go from the liquid phase to gas phase it requires a certain amount of heat to go from liquid to vapor. Once enough heat is added the liquid can finally go to vapor and increase in temperature again as a vapor.

Chem_Mod
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Re: Enthalpy of Sublimation

Postby Chem_Mod » Fri Jan 08, 2016 12:16 am

The above discussions are correct. Well done!


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