Colligative Properties Colligative properties are properties of a substance that depend on the concentration of the solute, not the solute itself. These pro...
Colligative Properties
Colligative properties are properties of a substance that depend on the concentration of the solute, not the solute itself. These properties include:
Vapor pressure: The vapor pressure of a solvent is lower than that of a pure solvent. This is because the solute particles compete with the solvent particles for space in the vapor phase.
Boiling point: The boiling point of a solvent is higher than that of a pure solvent. This is because the solute particles have a greater effect on the surface area of the solvent, which increases the boiling point.
Freezing point: The freezing point of a solvent is lower than that of a pure solvent. This is because the solute particles have a greater effect on the surface area of the solvent, which decreases the freezing point.
Determination of Molar Mass
The molar mass is a measure of the molecular weight of a substance. It is equal to the mass of one mole of the substance, which is the amount of substance that contains Avogadro's number of particles.
To determine the molar mass of a substance, we can use the following formula:
Molar mass = mass of solute / moles of solute
The molar mass can also be determined by measuring the mass of a known amount of solute and dividing it by the number of moles of solute