Calculating Concentration of CO in a Mixture

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Discussion Overview

The discussion revolves around calculating the concentration of carbon monoxide (CO) in a mixture with air, specifically focusing on the flow rates of CO and air from two cylinders. Participants explore the implications of different units of concentration and the nature of the gases involved.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant questions the units of concentration to be used, suggesting options like moles per liter or percent by weight/volume.
  • Another participant inquires about the total gas volume after one minute and how to convert this volume to weight under standard conditions.
  • There is clarification sought on the term "zero air," with one participant defining it as dry, compressed air devoid of hydrocarbons.
  • One participant states that CO and O2 do not react significantly at room temperature and pressure without a catalyst.
  • Another participant suggests that the original question may simply involve adding the flow rates of CO and air.

Areas of Agreement / Disagreement

Participants express uncertainty regarding the definition of "zero air" and the specifics of the reaction between CO and O2. There is no consensus on the method for calculating concentration or the implications of the flow rates.

Contextual Notes

Participants have not settled on the assumptions regarding the units of concentration or the conditions under which the gases are mixed. The discussion includes unresolved questions about the conversion of gas volumes to weight.

Who May Find This Useful

This discussion may be of interest to individuals involved in gas mixture calculations, environmental science, or chemical engineering, particularly those exploring gas reactions and concentration measurements.

nigi81
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CO oxidation ??

There are two cylinders. First is a CO cylinder having pure 99.97 CO gas
and second having zero air.

CO is given at 0.1LPM rate and air at 0.9LPM. what is the concentration of CO and what percentage in this mixture?? How to figure it out?
 
Last edited:
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Concentration in what units? Moles per liter? The concentration expressed as percentage can be in units of percent by weight or percent by volume. Which will you choose to use?

How much total gas will there be after one minute? What volume of CO will be in this amount? How might you convert this volume (assuming standard pressure and temperature) to weight?
 
nigi81 said:
There are two cylinders. First is a CO cylinder having pure 99.97 CO gas
and second having zero air.
What does "zero air" mean??
 
Gokul43201 said:
What does "zero air" mean??

Zero air is dry, compressed air that has no hydrocarbons in it. The hydrocarbons can come from the compressor's oil used to fill the cyls.
 
Last edited:
chemisttree said:
Zero air is dry, compressed air that has no hydrocarbons in it.
Ya learn something everyday!
 
Back to the original question - does CO and O2 react at room temperature/pressure?
 
No significant reaction without a catalyst.
 
chemisttree said:
No significant reaction without a catalyst.
That's what I thought, so the original question is just asking you at add 0.9 and 0.1 !
 

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