Question

Which of the following units could be used to describe solubility?
(A) $g/s$
(B) $g/L$
(C) $kg/s$
(D) $mol/s$

Answer 1

Hint : We know that the solubility is the measure of solute particles dissolving in the solvent, usually water. The solute and solvent combine to form a solution. The solute particles are measured in grams and the volume of solvent in terms of milliliter.

Complete Step By Step Answer:
A measure of the tendency of solute particles to dissolve in solvent (usually water) to form solution is known as solubility. In general, the solubility of solids in solvent increases with temperature while the solubility of gases decreases with increasing temperature. When the solubility is defined in terms of mole equivalents or gram equivalents per litre solvent, then it is known as normality of the solution. It is majorly used in titration reactions or reactions involving acid-base chemistry. Solubility is defined as the property of the solid component, liquid component, gaseous component which act as a solute to dissolve in a solvent formed of solid, liquid or gaseous.
The solute and solvent combine to form a solution. The solute is the component which is added in the solvent and solvent is the component in which solute is added. The solubility of the solute in the solvent is dependent on the physical and chemical properties of the solute and solvent, temperature, pressure and other chemicals. The extent of the solubility of the substance in the solvent is measured as the saturation concentration. In saturation concentration, no more solute can be added to the solvent and precipitate starts to form. The solubility of the substance in the solvent is determined by the balance of intermolecular forces between the solvent particle and solute particle.
The solubility of the solute in the solvent to form a solution is expressed in the terms of grams of solute per milliliter of the solution. The solubility is expressed in any mass unit per any volume unit. The maximum amount of solute that can be dissolved in a given volume of solution represents the solubility of solution. Hence, the unit $g/L$ can be used to describe the solubility.
Therefore, the correct answer is option B.

Note :
Remember that the molar solubility is the number of moles of solute dissolved in one liter of solution. The molar solubility is expressed in terms of mol per liter. The unit in which the molar solubility is expressed as $mol/L.$ It is important to note that there is a very minute difference between the terms solubility and concentration.