Uncovering the Mystery of NO Production in Bomb Calorimeter Experiments

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The discussion revolves around an experiment using a bomb calorimeter to measure the energy equivalent of benzoic acid, where unexpected nitrogen monoxide (NO) production was noted. The experiment involved isolating the bomb calorimeter from air and using pure oxygen at 15 bar pressure. Participants express confusion about the source of NO, questioning the bomb's construction and the purity of the reactants used. There is speculation that carbon monoxide might have been produced instead of NO. The conversation highlights the need for clarity on the experimental setup to resolve the mystery of NO production.
haisol
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Hello~

I had an experiment, and it was calorimeter measurement.

We used bomb calorimeter to measure the energy equivalent of benzoic acid(C6H5COOH).

We put the benzoic acid pallet into oxygen bomb with 15bar of oxygen.

But, my TA said that NO(nitrogen monoxide) will be produced, and we should find out

where it came from, but I have no idea.

Oxygen bomb was isolated from the air, and there's no nitrogen... where it came from?

Thank you!
 
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That is strange, the NO could not have been created from nothing. How was the bomb constructed, and are you sure it was just benzoic acid and pure oxygen? Any chance he meant Carbon Monoxide?
 
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