12. The Henry’s law constant for the solubility of
N2 gas in water at 298 K is 1.0 x 10 5 atm. The mole fraction of N2 in air is 0.8. The number of moles of N2 form air dissolved in 10 moles of water at 298 K and 5 atm pressure is
a. 4.0 x 10-4
b. 4.0 x 10-5
c. 5.0 x 10-4
d. 4.0 x 10-6
Ans. a
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