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5 Colligative Properties

Class 12 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryTwo solutions A and B have the same osmotic pressure at the same temperature. Solution A contains completely dissociated NaCl, while solution B contains a nonelectrolyte. In the same volume, which solution contains fewer actual moles of solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15HardChemistryIn an ideal solution, only the amount of solute is increased while the amount of solvent remains the same. Which statement is most correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIn which situation is the van’t Hoff factor of a solute expected to be less than 1?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIn a solution, solute particles normally remain completely unassociated. If half of the solute particles form dimers, how will the observed depression in freezing point compare with the ideal value at the same molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15HardChemistryA student calculates the molar mass from the depression in freezing point by treating calcium chloride as non-dissociating. What is the main error compared with ideal dissociation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15HardChemistryA 0.1 M solute has a van’t Hoff factor i = 4. At the same temperature, how will its osmotic pressure compare with that of a 0.4 M non-dissociating solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15HardChemistryWhich statement about the ebullioscopic constant \(K_b\) and cryoscopic constant \(K_f\) is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIn a benzene solution containing a non-volatile solute, the relative lowering of vapour pressure is less than the value expected for ideal behaviour. What does this indicate?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf the mole fraction of a non-volatile solute in an ideal dilute solution is 0.03, what is the relative lowering of vapour pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf the boiling point of a solution is \(100.78^\circ C\) and that of pure water is \(100.00^\circ C\), what is the elevation in boiling point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryWhich of the following properties ideally depends only on the number of solute particles present in a solution and not on their chemical nature?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryA solution contains 0.010 mol of solute in 1.00 L of solution. If its van’t Hoff factor is i = 2.0, what effective concentration should be used to calculate its osmotic pressure at 300 K?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIn trimer formation, three molecules associate to form one particle. If association is complete, what is the van’t Hoff factor (i)?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryAn electrolyte XY undergoes 30% dissociation. What will be its van’t Hoff factor (i)?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf the amount of a non-volatile solute is increased in a solution, how will the vapour pressure of the solution change compared with that of the pure solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryWhich statement is most accurate for colligative properties?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryA cell placed in a hypotonic solution may swell. What is the correct colligative reason?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf a blood cell is placed in a hypertonic solution, why will water move outward?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryA solution has a relative lowering of vapour pressure of 0.25. If the total number of moles in the solution is 4, how many moles of solute are present?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf 1 mole of solute is dissolved in 500 g of solvent and the van’t Hoff factor is 2, what is the effective molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium