Negative Heat Capacity

Moderators: Chem_Mod, Chem_Admin

Hailey Kim 4G
Posts: 110
Joined: Sat Jul 20, 2019 12:16 am

Negative Heat Capacity

Postby Hailey Kim 4G » Sat Feb 08, 2020 9:08 pm

Can heat capacities be negative for simple molecules?

pmokh14B
Posts: 107
Joined: Sat Aug 17, 2019 12:15 am

Re: Negative Heat Capacity

Postby pmokh14B » Sat Feb 08, 2020 9:37 pm

I don't think so. You are raising the temperature for heat capacity, which would require a positive input of energy/heat.

Aarja Pavade 1H
Posts: 103
Joined: Sat Aug 17, 2019 12:18 am

Re: Negative Heat Capacity

Postby Aarja Pavade 1H » Sat Feb 08, 2020 10:23 pm

Heat capacity is defined as the heat required to raise the temperature of an object by 1 degree C. Since we are trying to raise the temperature, heat must be added and thus should be a positive input.

JChen_2I
Posts: 107
Joined: Fri Aug 09, 2019 12:17 am

Re: Negative Heat Capacity

Postby JChen_2I » Sat Feb 08, 2020 10:57 pm

No because it doesn't make sense for it to take negative energy to raise the temperature of a substance.

stephaniekim2K
Posts: 79
Joined: Fri Aug 09, 2019 12:16 am

Re: Negative Heat Capacity

Postby stephaniekim2K » Sun Feb 09, 2020 7:47 pm

No, because you can't have a negative value for the amount of energy required to raise the temperature.


Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 1 guest