Page 105 - Science Course 2 (Book 1)

Mo4-L1b: What are Solubility and Concentration?

Add more Add more Solubility of Salt and Sugar
copper sulphate copper sulphate
Grams of solute dissolved in 100 ml water
500
450
Sugar
400

350
300
250
Dilute copper Concentrated Saturated 200
sulphate copper copper 150
solution sulphate sulphate
solution solution 100
50 Salt
To calculate concentration, you must know both the
mass of solute and the volume of solution that 0 20 40 60 80 100
contains this mass, and then, divide the mass of Temperature ( C)
0
solute by the volume of solution.

Key Concept
What are Solubility and Concentration?

How do concentration and solubility differ?

Dilute Concentrated

Mass of Solute (m)
Concentration(C) =
Volume of Solution(v)

If a solution contains only liquids or gases, its
concentration is stated as the volume of solute in a
given volume of solution.

Percent by volume is calculated by dividing the
volume of the solute by the total volume of solution
and then multiplying the quotient by 100.

Solubility—How much can dissolve?

Solubility is the maximum amount of solute that
can dissolve in a given amount of solvent at a given
temperature and pressure.

solid and
liquid matter Solubility
gas and solid
matter

Temperature
98