Calculate the concentration of nitrogen present in the water. Assuming that the temperature is 25oC, total pressure is 1 atm and mole fraction of nitrogen is 0.78. KH fornitrogen =8.42×10−7M/mmHg

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4.99 M

4.99×10−2M

4.99×10−4M

None of the above

answer is C.

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Detailed Solution

pN2=xN2×ptotal [∵1atm=760mmHg]pN2=0.78×1atm=0.78×760mm=592.8mmConcentration in solution=KH×pN2=8.42×10−7M(mm)−1×592.8mm=4.99×10−4M

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