The variation of solubility with temperature $T$ for a gas in a liquid is shown by the following graphs. The correct representation is:

Which of the following salt's solubility increases appreciably with an increase in temperature?

Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon $ . . . . . . $ .
$(i)$ Temperature $(ii)$ Nature of solute $(iii)$ Pressure $(iv)$ Nature of Solvent

Solubility curves of four ionic salts $X$,$Y$,$Z$,and $W$ are given below. In which case is the value of $\Delta H_{sol.} < 0$?

Identify the reason for the solubility of polar solute in polar solvent from the following.

The values of the Henry's law constant of $Ar$,$CO_{2}$,$CH_{4}$ and $O_{2}$ in water at $25^{\circ} C$ are $40.30$,$1.67$,$0.41$ and $34.86 \ kbar$,respectively. The order of their solubility in water at the same temperature and pressure is