Concentration of a Solution
- At any particular temperature, a solution that has dissolved as much solute as it is capable of dissolving is said to be a saturated solution.
- In other words, when no more solute can be dissolved in a solution at a given temperature, it is called a saturated solution.
- If a saturated solution at a particular temperature is heated to a higher temperature, then it becomes unsaturated.
- The amount of the solute present in the saturated solution at this temperature is called its
- If the amount of solute contained in a solution is less than the saturation level, it is called an unsaturated solution.
- The concentration of a solution is the amount of solute present in a given quantity of the solution.
- The amount of solute dissolved in a given mass or volume of solvent.
- Concentration of solution = (Amount of solute)/ (Amount of solution)
Or (Amount of solute)/ (Amount of solvent)
A solution contains 40 g of common salt in 320 g of water. Calculate the concentration in terms of mass by mass percentage of the solution
Mass of solute (salt) = 40 g
Mass of solvent (water) = 320 g
Also, Mass of solution = Mass of solute + Mass of solvent
= (40 g + 320 g)
= 360 g
Mass percentage of solution
= [(Mass of solute)/ (Mass of solution)] ×100
= (40/360) ×100 =11.1%
- The maximum amount of a solute which can be dissolved in 100gms of a solvent at a specified temperature is known as solubility of that solute in that solvent (at that temperature).