Uncovering the Mystery of NO Production in Bomb Calorimeter Experiments

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SUMMARY

The forum discussion centers on the unexpected production of nitrogen monoxide (NO) during bomb calorimeter experiments involving benzoic acid (C6H5COOH). The experiment utilized a bomb calorimeter filled with pure oxygen at 15 bar pressure. Participants questioned the source of NO, given the isolated environment of the bomb and the absence of nitrogen. Clarifications were sought regarding the bomb's construction and the purity of the reactants used.

PREREQUISITES
  • Understanding of bomb calorimeter operation and design
  • Knowledge of combustion reactions and byproducts
  • Familiarity with chemical compounds, specifically benzoic acid (C6H5COOH)
  • Basic principles of gas behavior under pressure
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  • Investigate the chemical reactions involved in bomb calorimetry
  • Research the potential formation of nitrogen monoxide in combustion processes
  • Examine the construction and materials of bomb calorimeters
  • Learn about the effects of pressure on gas reactions in closed systems
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Chemistry students, laboratory technicians, and researchers conducting calorimetry experiments or studying combustion reactions.

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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