Bomb Calorimeter

isochoric/isometric:
isothermal:
isobaric:

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Giselle1B
Posts: 26
Joined: Fri Sep 28, 2018 12:19 am

Bomb Calorimeter

Postby Giselle1B » Sun Mar 17, 2019 10:20 pm

When a question asks to solve the internal energy of a bomb Calorimeter, do we just assume that delta U is equal to q and thus ignore work?

katherinemurk 2B
Posts: 68
Joined: Wed Nov 15, 2017 3:02 am

Re: Bomb Calorimeter

Postby katherinemurk 2B » Sun Mar 17, 2019 10:24 pm

I thought so because the pressure and volume is constant!

Diviya Khullar 1G
Posts: 59
Joined: Fri Sep 28, 2018 12:19 am

Re: Bomb Calorimeter

Postby Diviya Khullar 1G » Sun Mar 17, 2019 10:38 pm

Yes because work is equal to pressure x V and in a bomb calorimeter, pressure and volume are constant so w=0.

Shutong Hou_1F
Posts: 117
Joined: Sat Sep 14, 2019 12:17 am

Re: Bomb Calorimeter

Postby Shutong Hou_1F » Fri Jan 31, 2020 10:40 pm

Yes. In addition, bomb calorimeter is an isolated system, so neither the matter nor the energy could be exchanged between the system (inside of bomb calorimeter) and the surrounding (outside of the bomb calorimeter). Therefore, the internal energy of bomb calorimeter is constant.

Anish Natarajan 4G
Posts: 51
Joined: Thu Jul 25, 2019 12:16 am

Re: Bomb Calorimeter

Postby Anish Natarajan 4G » Sun Feb 02, 2020 10:16 pm

A bomb calorimeter is a closed system, which means that there is no net change in volume. Since there is no change in volume there isn't any work being done and the change in internal energy (delta U) should be equal to q

Sofia Barker 2C
Posts: 101
Joined: Wed Sep 18, 2019 12:21 am

Re: Bomb Calorimeter

Postby Sofia Barker 2C » Mon Feb 03, 2020 1:09 am

Bomb calorimeters keep volume constant, and since work occurs due to expansion or compression, work equals 0. So delta U is solely in terms of q.


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