Which of the following gases is least soluble in water at the same temperature and pressure?

The solubility of $CO_2$ in water increases with

At $293 \ K$,the Henry law constant in water for $N_2$ and $O_2$ are $76.48 \ kbar$ and $34.86 \ kbar$ respectively. What is the ratio of mole fractions of $N_2$ and $O_2$ in water? (Assume partial pressures of $N_2$ and $O_2$ are the same at $293 \ K$)

Which of the following laws represents the quantitative relationship between the solubility of gas in liquid and its pressure?

State Henry's law and mention some important applications.

$A$ gas $X$ is dissolved in water at $2 \ bar$ pressure. Its mole fraction in the solution is $0.02$. Find the mole fraction of water in the solution when the pressure of the gas is doubled at the same temperature.