What is Van't Hoff factor? What possible values can it have if the solute molecules undergo
association. Prove that osmotic pressure is a colligative property?

What is Van't Hoff factor? What possible values can it have if the solute molecules undergo dissociation in solution. Prove that osmotic pressure is a colligative property?

the Van't Hoff factor for a solute that associates in solution is

What is elevation in boiling point? How can you calculate the molecular mass of a solute using it? Show that it is a colligative property?

The Van't Hoff factor i for a dilute aqueous solution of the strong electrolyte barium hydroxide is

Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get a homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life One of its examples is the use of ethylene glycol and water mixture as an anti-freezing liquid in the radiator of automobiles.A solution M is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixture is 0.9.Given: Freezing point depression constant of water (Kfwater​)=1.86Kkgmol−1Freezing point depression constant of ethanol(Kfethanol​)=2.0Kkgmol−1 Boiling point elevation constant of water(Kbwater​)=0.52Kkgmol−1 Boiling point elevation constant of ethanol (Kbethanol​)=1.2Kkgmol−1 Standard freezing point of water =273K Standard freezing point of ethanol =155.7K Standard boiling point of water =373K Standard boiling point of ethanol =351.5K Vapour pressure of pure water =32.8mmHg Vapour pressure of pure ethanol =40mmHg Molecular weight of water =18gmol−1 Molecular weight of ethanol =46gmol−1 In answering the following questions, consider the solutions to be ideal dilute solutions and solutes to be non-volatile and non-dissociative. Water is added to the solution M such that the mole faraction of water in the solution becomes 0.9. the boiling point of this solution is

True or false Van't Hoff factor, i<1 if there is association of the solute in the solution.

Define van't Hoff factor . What is its importance? How does it account for abnormal molecular masses?

Under what conditions Van't Hoff factor , i less than one

The values of Van't Hoff factor for KCl, NaCl and K_2SO_4 respectively are