Chemistry & concentration
2013-12-08 9:19 pm
An automobile’s exhaust gas contains 1.5 % by volume of CO. What is the concentration of CO as of (ug/m^3)at 25℃ and 3atm. pressure
回答 (1)
2013-12-10 12:33 am
✔ 最佳答案
ideal gas law, assume ideal gas, use partial pressure to calculatefor CO
partial pressure = 1.5%x3x(101kPa)=4.545kPa=4545Pa
per one m3 of volume
(4545)(1)=n8.31(273.15+25)
there are n=1.8344mol of CO
molar mass of CO=12+16=28gmol-1
CO is 51.3632g/m3
your unit is ug?
which ug=10^-6g
then it would be 5.13632x10^7 ug/m3
but this is strange for using this small unit
收錄日期: 2021-04-13 19:50:35
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