Heat Capacity for Calorimeters.

Moderators: Chem_Mod, Chem_Admin

Daniel Yu 1E
Posts: 100
Joined: Sat Aug 24, 2019 12:15 am

Heat Capacity for Calorimeters.

Postby Daniel Yu 1E » Sun Feb 16, 2020 10:23 pm

When you are doing thermodynamic calculations with solutions in calorimeters, why doesn't the mass/mol matter sometimes?
I've seen in some equations you need to use mass/ moles but in others it is ignored. Why is that?

Kaylee Sepulveda 4G
Posts: 100
Joined: Thu Jul 11, 2019 12:16 am

Re: Heat Capacity for Calorimeters.

Postby Kaylee Sepulveda 4G » Sun Feb 16, 2020 10:58 pm

Heat capacity is a state function, but heat capacity is an intensive property. In contrast, specific heat capacity and molar heat capacity are extensive properties. Extensive means that it depends on the amount of material being affected, so mols or grams would be a factor in your calculations.

heat capacity.jpg
heat capacity.jpg (30.31 KiB) Viewed 105 times


Here is a nice explanation of a bomb calorimeter calculation: https://www.youtube.com/watch?v=zEaMi5ob5Ig

PranaviKolla2B
Posts: 114
Joined: Fri Aug 30, 2019 12:17 am

Re: Heat Capacity for Calorimeters.

Postby PranaviKolla2B » Sun Feb 16, 2020 11:03 pm

What is the difference between a calorimeter and a bomb calorimeter?

BCaballero_4F
Posts: 94
Joined: Wed Nov 14, 2018 12:22 am

Re: Heat Capacity for Calorimeters.

Postby BCaballero_4F » Tue Feb 18, 2020 4:44 pm

PranaviKolla2B wrote:What is the difference between a calorimeter and a bomb calorimeter?

I believe a calorimeter is just a thermally insulated container while a bomb calorimeter is a sealed container that is metal in water which is also in an insulated container.

Aman Sankineni 2L
Posts: 103
Joined: Fri Aug 30, 2019 12:17 am

Re: Heat Capacity for Calorimeters.

Postby Aman Sankineni 2L » Tue Feb 18, 2020 4:47 pm

The difference between the two is that a regular calorimeter is simply a "thermally insulated container" while in a bomb calorimeter, the reaction takes place in a sealed metal container that is immersed in water in an insulated container.


Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 3 guests