Bomb calorimeters vs polystyrene cup calorimeters

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Letizia Ye 4F
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Bomb calorimeters vs polystyrene cup calorimeters

Postby Letizia Ye 4F » Thu Feb 07, 2019 1:10 pm

During lecture we mentioned bomb calorimeters and normal calorimeters, what is the difference between the two? What conditions and equations apply to each of them?

mbaker4E
Posts: 69
Joined: Fri Sep 28, 2018 12:26 am

Re: Bomb calorimeters vs polystyrene cup calorimeters

Postby mbaker4E » Thu Feb 07, 2019 1:32 pm

A bomb calorimeter measures heat flow at a constant volume, as you can imagine a bomb as a rigid chamber that cannot increase in volume. A polystyrene cup calorimeter on the other hand measured changes in temperature at a constant pressure.

Hedi Zappacosta 1E
Posts: 66
Joined: Fri Sep 28, 2018 12:27 am

Re: Bomb calorimeters vs polystyrene cup calorimeters

Postby Hedi Zappacosta 1E » Fri Feb 08, 2019 12:10 pm

The polystyrene calorimeter is an open system. heat can leave. But a bomb calorimeter is closed and isolated

Aria Soeprono 2F
Posts: 64
Joined: Fri Sep 28, 2018 12:27 am

Re: Bomb calorimeters vs polystyrene cup calorimeters

Postby Aria Soeprono 2F » Fri Feb 08, 2019 12:14 pm

Wouldn't a regular polystyrene calorimeter be an approximation of a closed system, because heat can go out but volume remains the same?


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