At 298 K, the mole percentage ... | Solutions | JEE Main 2026

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JEE MAIN 2026

24-01-2026 S2

Question

At 298 K , the mole percentage of $\mathrm{N}_2(\mathrm{~g})$ in air is $80 \%$. Water is in equilibrium with air at a pressure of 10 atm . What is the mole fraction of $\mathrm{N}_2(\mathrm{~g})$ in water at 298 K ? $\left(\mathrm{K}_{\mathrm{H}}\right.$ for $\mathrm{N}_2$ is $6.5 \times 10^7 \mathrm{mmHg}$ )

Select the correct option:

A

$1.23 \times 10^{-7}$

B

$1.17 \times 10^{-4}$

C

$9.35 \times 10^5$

D

$9.35 \times 10^{-5}$

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