The solubility of potassium chloride KCl in water at room temperature 25C is approximately 34.0 grams per 100 mL of water. To convert this to grams per liter g/L , we can use the following calculation:34.0 g/100 mL * 1000 mL/L = 340 g/LNow, to convert this to moles per liter mol/L , we need to find the molar mass of KCl. The molar mass of potassium K is 39.10 g/mol, and the molar mass of chlorine Cl is 35.45 g/mol. Therefore, the molar mass of KCl is:39.10 g/mol K + 35.45 g/mol Cl = 74.55 g/mol KCl Now we can convert the solubility in grams per liter to moles per liter: 340 g/L / 74.55 g/mol = 4.56 mol/LSo, the solubility of potassium chloride at room temperature is approximately 340 g/L or 4.56 mol/L.Temperature and pressure can affect the solubility of potassium chloride in water. Generally, the solubility of a solid solute in a liquid solvent increases with increasing temperature. This is because the increased kinetic energy of the solvent molecules at higher temperatures allows them to more effectively break the ionic bonds in the solute, allowing it to dissolve more readily. The solubility of KCl in water follows this trend, with its solubility increasing as the temperature increases.Pressure has a minimal effect on the solubility of solid solutes like KCl in liquid solvents. This is because the volume of the solution does not change significantly when pressure is applied, unlike in the case of gas solutes, where pressure can greatly affect solubility as described by Henry's Law . Therefore, the solubility of potassium chloride in water is not significantly affected by changes in pressure.