Calorimeters as Isolated Systems

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Leonardo Le Merle 1D
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Joined: Wed Feb 27, 2019 12:16 am

Calorimeters as Isolated Systems

Postby Leonardo Le Merle 1D » Wed Jan 29, 2020 9:59 am

I may be misunderstanding definitions, but how can a bomb calorimeter be an isolated system if energy is allowed to transfer to the water? Doesn’t an isolated system mean matter and energy exchange is not allowed?

andrewcj 2C
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: Calorimeters as Isolated Systems

Postby andrewcj 2C » Wed Jan 29, 2020 10:01 am

In a bomb calorimeter, the item being burned is considered part of the system. An isolated system cannot exchange matter and energy with its surroundings, but it can exchange matter and energy within itself.

Posts: 109
Joined: Sat Sep 07, 2019 12:19 am

Re: Calorimeters as Isolated Systems

Postby Chantel_2I » Wed Jan 29, 2020 2:24 pm

Dr. Lavelle specified in class that there can still be a lot happening within the system, without it interacting with the surroundings. Everything within the calorimeter is part of the system, and reactions can still occur within the system. However, there will be no energy transfer with anything outside the calorimeter.

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