Why the colligative properties of electrolyte solution is greater than those for non electrolyte solution of the same concentration?

Since the electrolytes ionise and give more than one particle per formula unit in solution, the colligative effect of an electrolyte solution is always greater than that of a non-electrolyte of the same molar concentration.

Why do colligative properties not depend on identity?

Colligative properties depend only on the number of dissolved particles in solution and not on their identity. Both solutions have the same freezing point, boiling point, vapor pressure, and osmotic pressure because those colligative properties of a solution only depend on the number of dissolved particles.

How do you find molecular weight from molality?

Use the freeing point depression (ΔTf) to calculate the molality of the solution. Then use the molality equation to calculate the moles of solute. Then divide the grams of solute by the moles to determine the molar mass.

Why do ionic materials change the colligative properties of a solution?

Ionic solution measurement. The addition of ions creates significant changes in properties of solutions. Water molecules surround the ions and are somewhat tightly bound to them. Colligative properties are affected because the solvent properties are no longer the same as those in the pure solvent.

Why do ionic compounds like sodium chloride has greater effect on the colligative properties of solution?

There is a complicating factor: ionic solutes separate into ions when they dissolve. This increases the total number of particles dissolved in solution and increases the impact on the resulting colligative property.

Why do colligative properties depend only on the concentration and not on the identity of the solute?

The trick is: an ideal solution, in which the solute-solute intermolecular forces and solute-solvent interactions are more or less of the same character, has the property that colligative properties are dictated by composition given only in terms of amount of moles.

Which of the following properties doesn’t depend upon the number of solute particles?

Which of the following property does not depend upon the number of solute particles only? It is Relative lowering in vapour pressure which is a colligative property and not lowering in vapour pressure.

What was the purpose of measuring the freezing point of water?

The purpose of this experiment is to determine the molecular weight of an unknown substance by measuring the freezing point depression of an aqueous solution of the unknown. The hypothesis is that as freezing point drops the solvent freeze out, leaving the solution more and more concentrated.

How do you find the freezing point?

The freezing point depression ∆T = KF·m where KF is the molal freezing point depression constant and m is the molality of the solute. Rearrangement gives: mol solute = (m) x (kg solvent) where kg of solvent is the mass of the solvent (lauric acid) in the mixture.

How the molecular mass of a non volatile and non electrolyte solute is determined with the help of osmotic pressure measurement?

Determination of molecular mass of non-volatile solute from osmotic pressure. The osmotic pressure is a colligative property. For a given solvent the osmotic pressure depends only upon the molar concentration of solute but does not depend upon its nature. According to Boyle Van’t Hoff law (at conc.

How is molecular weight calculated using Colligative properties?

Colligative properties such as freezing point depression or boiling point elevation can be used to calculate the molecular weight of a soluble solid. To complete this calculation, the mass of solute and solvent must be known as well as the freezing points/boiling points of the pure solvent and the solution.