The presence of radioactive gas radon in well water obtained from aquifiers that

Question

The presence of radioactive gas radon in well water obtained from aquifiers that lie in rock deposits presents a possible health hazard in the united states. A. Assuming that the solubility of radon in water with 1 atm pressure of the gas over the water at 30 C is 7.27 x 10^-3 M what is the Henry's law constant for radon in water at this temperature? B) A sample consisting of various gases contains 3.5 x 10^-6 mole fraction of radon. This gas at a total pressure of 32 atm is shaken with water at 30 C. Calculate the molar concentration of radon in water.

Explanation / Answer

Henry law constant Kh= 1/7.27 x 10^-3 atm/ mol == 137.551582 atm/ mol

P=KhC

partial pressure of radon= 3.5 x 10^-6 *32 =  137.551582 *C

C= 3.5 x 10^-6 *32 /137.551582== 8.14239999x 10^-7 mol

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