The partial pressure of a gas at $25 \text{ }^\circ\text{C}$ is $0.18 \text{ atm}$. Calculate the concentration of the gas dissolved at the same temperature, if $K_H$ is $0.15 \text{ mol dm}^{-3} \text{atm}^{-1}$. (in $\text{ M}$)

Henry's law constant for the solubility of $N_2$ gas in water at $298\, K$ is $1.0 \times 10^5\, atm$. The mole fraction of $N_2$ in air is $0.6$. The moles of $N_2$ from air dissolved in $10$ moles of water at $298\, K$ and $5\, atm$ pressure is

In which solution,the solubility of the solute decreases with an increase in temperature?

Assertion : Iodine is more soluble in water than in carbon tetrachloride.
Reason : Iodine is a polar compound.

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

Assertion $(A)$: For an endothermic dissolution process,an increase in temperature increases the solubility in a nearly saturated solution.
Reason $(R)$: In a saturated solution,dynamic equilibrium exists between the dissolved solute and the undissolved solute.