Air pollution and noise pollution miscellaneous Moderate Questions and Answers | Page - 1

Air pollution and noise pollution miscellaneous

The concentration of Sulphur Dioxide (SO₂) in ambient atmosphere was measured as 30 mg/m³. Under the same conditions, the above SO₂ concentration expressed in ppm is ___. Given: P/(RT) = 41.6 mol/m³; where, P = Pressure; T = Temperature; R= universal gas constant; Molecular Weight of SO₂ = 64.

1. 3.0113 ppm
1. 2.0113 ppm
1. 0.0113 ppm
1. 1.0113 ppm

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0.0133
Given concentration of SO₂ = 30 μg/m³
10⁶ m³ of air has 30gSO₂ = 30 = mol SO₂
64

V = nRT = n
p p/RT

= 30/64 mol = 0.0113 m³
41.6 mol/m³

Conc. of SO₂ in ppm = 0.0113 ppm

Correct Option: C

0.0133
Given concentration of SO₂ = 30 μg/m³
10⁶ m³ of air has 30gSO₂ = 30 = mol SO₂
64

V = nRT = n
p p/RT

= 30/64 mol = 0.0113 m³
41.6 mol/m³

Conc. of SO₂ in ppm = 0.0113 ppm