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Calorimetry

Posted: Tue Jan 28, 2020 1:27 pm
by Shannon Asay 1C
How does the experiment work to calculate enthalpy using the bomb calorimeter?

Re: Calorimetry

Posted: Tue Jan 28, 2020 2:07 pm
by Kevin Xu 4F
A bomb calorimeter is specifically used to measure the heat released of a substance at constant volume. A substance is placed inside a bomb vessel and it is heated to combustion with ample oxygen, and the temperature change in that reaction is measured by heat sensors within the calorimeter. Then, the calorimeter can use the heat released, temperature change, and mass of substance to calculate the specific heat capacity of that substance.

Re: Calorimetry

Posted: Sat Feb 01, 2020 3:16 pm
by DLee_1L
Does the substance in the bomb calorimeter get heat added to it? In my mind, I feel like that would mess up the measurement of the heat released by the actual reaction. I thought that the experiments in the bomb calorimeter had to spontaneously occur?

Re: Calorimetry

Posted: Sun Feb 02, 2020 12:18 am
by Jesse H 2L
DLee_1L wrote:Does the substance in the bomb calorimeter get heat added to it? In my mind, I feel like that would mess up the measurement of the heat released by the actual reaction. I thought that the experiments in the bomb calorimeter had to spontaneously occur?



Bomb calorimeters still require a heat source, but there are measures usually in place in order to measure the difference in heat from the fuel being used and the enthalpy of the reaction

Re: Calorimetry

Posted: Sun Feb 02, 2020 12:51 am
by PranaviKolla2B
What is the difference between a stand calorimeter and a bomb calorimeter?