Colligative Properties Examples
Various example of the colligative properties can be easily seen in our daily life. Such as when we add some salt in the water the freezing point of the water increases, i.e. it freezes far below its normal freezing point. Also, the boiling point of the water also increases if we add salt or sugar in the water. Similarly adding alcohol to water decreases the freezing point of the water.
As these colligative properties are dependent on the concentration of the solution, let’s first learn about the measure of concentration of the solution.
Molarity (M)
Molarity is the concentration of a solution, measured as the number of moles of solute per liter of solution. Molarity of any solution is calculated by the formula,
Molarity = Number of Moles of Solute/Volume of Solution in L
Molality (m)
Molality is the amount of a substance dissolved in a certain mass of solvent. It is defined as the number of moles of a solute per kilogram of a solvent. Molality of any solution is calculated by the formula,
Molality = Number of Moles of Solute/Weight of Solvent in Kg
Mole Fraction (x)
Mole fraction of a solute in a solution gives the ratio of the number of moles of the solute present in the solution to the total number of moles of the solute and the solvent present in the solution. There is another definition for mole fraction that is, “Mole fraction of a compound is the ratio of the number of moles of the compound to the total moles of compounds in the mixture.” Mole fraction of any solution is calculated by the formula,
Mole Fraction = (Number of Moles of Solute)/(Total Number of Moles of Solute and Solvent)
Colligative Properties
Colligative Properties of any solution is the property of the solution that depends on the ratio of the total number of solute particles and the total number of solvent particles. Changing the moles or number of particles of solute or solvent changes the colligative properties of the solution. These colligative properties are not dependent on the chemical nature of the solute or solvent but are rather dependent on the number of solutes and solvent particles in the solution. These colligative properties depend on the number of particles in the solution rather than the nature of the solute and the solvent. These properties can be easily linked with the concentration of the solution, i.e. Molarity, Normality, and Molality.
In this article, we will learn about, various types of Colligative properties of the solution, their examples, and others in detail.
Table of Content
- What are Colligative Properties?
- Colligative Properties Examples
- Types of Colligative Properties
- Lowering Of Vapour Pressure
- Elevation in Boiling Point (ΔTb)
- Depression in Freezing Point (ΔTf)
- Osmotic Pressure (π)
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