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16 May, 15:14

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

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  1. 16 May, 17:41
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    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
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