6- 366.51 a. – SO2is hazardous and should not be released directly into the atmosphere, especially if the analyzer is inside. – From Henry’s law, the partial pressure of SO2increases with the mole fraction of SO2in the liquid, which increases with time. If the water were never replaced, the gas leaving the bubbler would contain 1000 ppm SO2(nothing would be absorbed), and the mole fraction of SO2in the liquid would have the value corresponding to 1000 ppm SO2in the gas phase. b.Calculate mol SOmol in terms of g SOg H O222xrbgbg100Basis: 100 g H O 1 mol 18.02 gmol H O(g SO1 mol 64.07 g(mol SOmol SOmolSO22==⇒=+FHGIKJ5550 015610 01561555 0 01561.).)...rrxrrFrom this relation and the given data, pxSOSO2mmHgmol SOmol=⇔=0042 1.4 x 10–385 2.8 x 10–3129 4.2 x 10–3176 5.6 x 10–3A plot of pSO2vs. xSO2is a straight line. Fitting the line using the method of least squares (Appendix A.1) yields pHxSOSOSO2=di, Hmm Hgmole fractionSO2=×3136 104. c. ()242SO64SOSO100 mol SOmol SO100 ppm SO
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