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Colligative Properties

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

ChemistryIf the observed molar mass of a solute is 2/3 of its true molar mass, what is the van’t Hoff factor (i)?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Medium ChemistryWhich colligative property is most suitable for determining the molar mass of polymers with very high molar masses?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhile determining molar mass by the lowering of vapour pressure method, if a solute undergoes complete dimerisation in benzene, how will its observed molar mass compare with its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Medium ChemistryWhich colligative property is most suitable for determining the molar mass of a polymer with very high molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Easy ChemistryWhich colligative property is most suitable for determining the molar mass of polymers with very large molecules?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Easy ChemistryIf the true molar mass is 120 g mol^-1 and the van't Hoff factor i = 2 for a solute, what observed molar mass will be obtained from a colligative-property measurement?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Medium ChemistryWhich colligative property is generally preferred for determining the molar mass of high-molar-mass solutes such as proteins and polymers?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Easy ChemistryWhen 4 g of a non-dissociated solute is dissolved in 200 g of solvent, the elevation in boiling point is 0.104 K. If K_b = 0.52 K kg mol^-1, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 1.5 g of a non-dissociated solute is dissolved in 150 g of solvent, the elevation in boiling point is 0.104 K. If K_b = 0.52 K kg mol^-1, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryA 1.8 g sample of a non-dissociated solute is used to make 250 mL of solution. At 300 K, the osmotic pressure is 0.738 atm. If R = 0.082 L atm mol⁻¹ K⁻¹, what is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryWhich property forms the basis for determining the molar mass of a solute using a colligative property such as freezing-point depression?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIn which case is it safest to treat the observed molar mass as the normal molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Easy ChemistryMeasurement of the osmotic pressure of a solution is especially suitable for determining the molar mass of which type of solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 18Easy ChemistryIf Kb = 0.52 K kg mol⁻¹, w₂ = 2 g, w₁ = 100 g, and ΔTb = 0.104 K, what is the molar mass M?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIf Kf = 1.86 K kg mol⁻¹, w₂ = 1 g, w₁ = 100 g, and ΔTf = 0.186 K, what is the molar mass M?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIn the vapour-pressure-lowering method, the relative lowering for a dilute solution is approximately equal to what?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 18Medium ChemistryWhich colligative property can be measured at room temperature for molar mass determination?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 18Easy ChemistryIf two solutions are isotonic, which statement about them is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 18Easy ChemistryA nonelectrolyte solution has a freezing-point depression, \(\Delta T_f=0.186\,K\), and the cryoscopic constant is \(K_f=1.86\,K\,kg\,mol^{-1}\). What is the molality of the solution?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Easy ChemistryIf the normal molar mass is 60 g mol⁻¹ and the observed molar mass is 120 g mol⁻¹, what is the van’t Hoff factor i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Easy