The concentration of carbon monoxide (co) in an exhaust gas is 1x10^4 ppmv. what is the concentration in mg/m^3 at 25 and 1 atm

1.1451 x 104 (11451.13) mg/m3

Explanation:

1 ppmv is defined as one volume of a contaminant or solid (CO) (mL) in 1 x 106 volume of solvent/water.

1ppmv = 1mL/m3

Concentration in mg/m3 = volume in ppm x molecular weight x pressure (kPa) / (gas constant x temperature (K)

Molecular weight of CO = 12 + 16

= 28g/mol

Temperature = 273.15 + 25

= 298.15K

Pressure = 1 x 101.325kPa

= 101.325kPa

Ppmv = 1 x 10-4ppmv

Gas constant, R = 8.3144 L. kPa/mol. K

Concentration in mg/m3 = (1 x 104 * 28 * 101.325) / (8.3144 * 298)

= 1.1451 x 104mg/m3

= 11451.13 mg/m3