Question

Solubility of NaCl at $40 ^oC$ is 36.5 g. What is meant by this statement?

Answer 1

The chemical name for salt is sodium chloride. Sodium is an electrolyte that controls how much water the body holds. Nerve impulses and muscle contractions are also affected by sodium. Dehydration, prolonged sweating, and other sources of sodium deficiency are treated or prevented with sodium chloride.

Complete answer:
The ability of a solid, liquid, or gaseous chemical compound called a solute to dissolve in a solid, liquid, or gaseous solution is known as solubility. The physical and chemical properties of the solute and solvent, as well as temperature, heat, and the presence of other chemicals (including variations in pH) in the solution, all influence the solubility of a substance. The saturation concentration of a liquid in a given solvent is the point at which applying more solute does not increase the concentration of the solution and starts to precipitate the excess volume of solute.
The solubility of a substance is expressed in grams per 100 g of water (g/100gm).
The solubility of sodium chloride is 36.5 gm at 1 atm pressure, which means that 36.5 g of sodium chloride is soluble in 100 g of water.
To dissolve about 35 gram of salt at room temperature, you'll need at least 100 grams of water; but, as the temperature increases, the amount of salt that water will dissolve changes as well. Saturation is the point at which water can no longer dissolve salt, and it occurs where the salt you apply just reaches the bottom of the solution. Salt's solubility in water is often aided by a number of factors.

Note:
Since a solution may arise as a result of a chemical reaction, solubility should not be confused with the ability to dissolve a liquid. Zinc, for example, dissolves (with effervescence) in hydrochloric acid as a result of a displacement reaction that releases hydrogen gas. In the acid, the zinc ions are soluble. A substance's solubility is distinct from its rate of solution, which refers to how quickly it dissolves. Although there are several variables to consider, the bigger a particle is, the quicker it dissolves.