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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: rk883 on October 28, 2010, 11:08:34 PM

Title: Concentration and ppmv
Post by: rk883 on October 28, 2010, 11:08:34 PM

This homework problem was assigned a few days ago, I've been racking my brains but I still don't have an answer :'(, whats worse is the tutoring dept was less than useless, I was hoping someone here would be kind enough to show me how to get the answer. Specifically what the logic behind it is, so far I've figured that I should multiply the volume by .001 and that would be the desired concentration but I don't know if I'm on the right path.


"The running engine of an automobile produces carbon monoxide (CO), a toxic gas, at the rate of about 188 g CO per hour. A car is left idling in a poorly ventilated garage that is 5.3 m long, 4.0 m wide, and 2.2 m high at 20°C.

How long would it take to build up a lethal concentration of CO of 1000 ppmv (parts per million by volume)?"
 

Thanks.

Title: Re: Concentration and ppmv
Post by: Borek on October 29, 2010, 03:35:07 AM

What is garage volume? What is volume of CO after its concentration reached 1000 ppm v/v? Number of moles of CO? Mass of CO? How many hours to produce this mass?