Solutions: JEE Main 2026 Chemistry question

At 298 K, the mole percentage of $\mathrm{N_2(g)}$ in air is 80%. Water is in equilibrium with air at a pressure of 10 atm. What is the mole fraction of $\mathrm{N_2(g)}$ in water at 298 K? ($K_H$ for $\mathrm{N_2}$ is $6.5\times10^7$ mm Hg)