Heat Capacity

Moderators: Chem_Mod, Chem_Admin

Brandon Yu
Posts: 121
Joined: Fri Sep 24, 2021 6:07 am

Heat Capacity

Postby Brandon Yu » Wed Jan 26, 2022 4:02 pm

How does dividing heat capacity by grams turn it from an extensive property to an intensive one?

jaycmartinezDisc3b
Posts: 56
Joined: Mon Jan 03, 2022 9:17 pm

Re: Heat Capacity

Postby jaycmartinezDisc3b » Wed Jan 26, 2022 5:28 pm

Hey! This is because heat capacity by itself only describes the amount of energy required to raise a given object 1c. Now obviously, this would depend on the mass of the object, as the heat capacity of 1 gram wouldn't be the same as something like a building. Therefore, by dividing out grams, you are using a ratio, rather than accounting individually for the amount of substance. Since this is a ratio (like in equilibrium) it really doesn't matter how much you have of it, so it would be an intensive property. Hope this helps :)

emily3L
Posts: 114
Joined: Fri Sep 24, 2021 7:20 am

Re: Heat Capacity

Postby emily3L » Wed Jan 26, 2022 6:26 pm

Dividing heat capacity by grams gives the specific heat capacity, meaning it is the heat capacity per gram. Therefore, it is independent of the amount of substance, making it an intensive property.

Achyutha Kodavatikanti_3H
Posts: 51
Joined: Mon Jan 03, 2022 9:33 pm

Re: Heat Capacity

Postby Achyutha Kodavatikanti_3H » Thu Jan 27, 2022 5:14 pm

dividing heat capacity by grams makes it intensive. it creates a ratio that stays the same no matter the "size"

Kayla Tran 3C
Posts: 50
Joined: Fri Feb 12, 2021 12:15 am

Re: Heat Capacity

Postby Kayla Tran 3C » Thu Jan 27, 2022 7:28 pm

Dividing heat capacity (J/K) by grams turns it into specific heat capacity (J/(kg*K)). Heat capacity depends on the object's mass. Specific heat capacity is an intensive property because it is a ratio, so we don't need to worry about the amount of substance.


Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 11 guests