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Freezing Point Depression

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

ChemistryIn a solution, association of solute molecules makes the van’t Hoff factor i less than 1. What will be the effect on ΔTf?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryA solution has a freezing-point depression of 0.93 K. If Kf = 1.86 K kg mol⁻¹ and the solute is non-dissociated, what is the molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryWhy does the freezing point of a solution decrease when a non-volatile solute is added?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryAssuming complete dissociation, which of the following aqueous solutions of equal molality will have the lowest freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryIf the molar mass obtained from freezing-point depression is higher than the true value, what may be happening in the solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryIf a 0.2 m glucose solution has ΔT_f = 0.372 K, what will be the approximate ΔT_f of a 0.2 m NaCl solution in the same solvent, assuming complete dissociation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryAmong the following solutions of equal molality in the same solvent, which will have the lowest freezing point if dissociation is complete?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryAmong aqueous solutions of equal molality, assuming complete dissociation, which solute will produce the greatest depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhich of the following statements correctly describes a colligative property?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryIf two non-electrolyte solutions have the same molality and the same solvent, how will their ΔT_f values compare?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf 0.1 mol of a non-electrolyte solute is dissolved in 200 g of solvent and K_f = 1.8 K kg mol⁻¹, what is the depression in freezing point, ΔT_f?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16MediumChemistryFor a solution with van’t Hoff factor i = 0.5, cryoscopic constant K_f = 2 K kg mol⁻¹, and molality m = 1 mol kg⁻¹, what is the depression in freezing point, ΔT_f?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16MediumChemistryWhy is the freezing point of a solution lower than that of the pure solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf the observed depression in freezing point is greater than the value expected for a non-electrolyte because of ionisation, what is the van’t Hoff factor, i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf the freezing point of a pure solvent is 0 °C and that of its solution is −0.72 °C, what is the depression in freezing point, ΔT_f?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryIf Kf = 2.0 K kg mol⁻¹ and ΔTf = 0.8 K for a non-electrolyte solution, what is its molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryIf the value of \(K_f\) is the same in all cases, in which option will the depression in freezing point be greatest?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryAmong the following solutions of equal molality, which will show the greatest freezing point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf the freezing point of pure solvent is \(4^{\circ}C\) and \(\Delta T_f = 2.5^{\circ}C\), what will be the freezing point of the solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf \(i=3\), \(K_f=1.86\), and \(m=0.2\), what will be \(\Delta T_f\)?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Easy