Consider an NAPL mixture of PCE and fuel containing BTEX with the following mole

Question

Consider an NAPL mixture of PCE and fuel containing BTEX with the following mole fractions: PCE = 0.10, B = 0.15: T = 0.15; E = 0.08 and X = 0.10. The vapor pressure of the pure compounds are PCE = 0.0251 atm; B =0.i26atm;T = 0.0380atm: e = 0.0126 atm and x = 0.0117 atm. Assume Raoults law and Henry's laws apply, estimate the aqueous concentration of PCE in water that is in equilibrium with the NAPL mixture Estimate the reduction in aqueous PCE concentration (solubility) due to the presence of BTEX.

Explanation / Answer

Ans: As per Henry' s law, S=K*P

                                             K = Henry's constant,26.9 atm-L/mol  and P=vapour pressure, 0.0251atm

                                          S=26.9 * 0.0251 = 0.675 mol/L

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