Answer:
Step-I. Calculation of partial pressure of
oxygen and nitrogen
Total pressure of air in equilibrium with
water = 10 atm.
As air contains 20% oxygen and 79 %
nitrogen by volume,
Partial pressure of
oxygen (PO2)
= 2 x 760 mm = 1520 mm
Partial pressure of nitrogen ()
= 7.9 x 760 mm 6004 mm
Step-II. Calculation of composition of O2
and N2 dissolved in water
Applying Henry?s law,
Or
= 4.61 × 10?5
= 9.22 × 10?5.
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