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
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dm-3 sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1 ; 1 dm-3 = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)
