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Molality

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

ChemistryIf 0.5 mol of a solute is dissolved in 2 kg of solvent, what is the molality of the solution?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 14Easy ChemistryIf a 0.1 m solution has a boiling-point elevation of 0.104 K and Kᵦ = 0.52 K kg mol⁻¹, what is the van’t Hoff factor i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryAmong aqueous solutions of equal molality, assuming complete ionisation, which solute will produce the greatest depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryWhen 3 g of a non-dissociated solute is dissolved in 100 g of solvent, the boiling point rises by 0.156 K. If Kb = 0.52 K kg mol⁻¹, what is the molar mass of the solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryAmong aqueous solutions of equal molality, assuming complete ionisation, which solute solution will show the greatest depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryIf Kf and molality are known, how is the depression in freezing point found for a non-dissociating solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Easy ChemistryA solution contains 0.5 mol of solute dissolved in 1 kg of solvent. What is its molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Easy ChemistryIf equal masses of different solutes are dissolved in equal masses of water, which solute will cause the greater freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Medium ChemistryWhat is the correct meaning of the constant Kf used in freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Easy ChemistryWhich option gives the correct concentration unit for calculating the stated colligative property?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryA 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 13Easy ChemistryIf a 0.5 m non-dissociated solute produces a boiling-point elevation of 0.26 K, what is the value of Kb?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryWhen 5 g of a solute is dissolved in 250 g of solvent, the molality is 0.2 m. What is the molar mass of the solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryIf two solutions have the same molality but the solute ionises in one of them, which solution will show the greater colligative effect?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Medium ChemistryIf 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 15Medium ChemistryIf 0.2 mol of a non-electrolyte solute is dissolved in 400 g of solvent and K_b = 0.5 K kg mol⁻¹, what is the elevation in boiling point, ΔT_b?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16Medium ChemistryIf 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 16Medium ChemistryFor 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 16Medium ChemistryIf the molality of a non-electrolyte solution is 0.5 mol kg⁻¹ and the ebullioscopic constant is K_b = 0.52 K kg mol⁻¹, what is the elevation in boiling point, ΔT_b?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16Medium ChemistryIf 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 15Easy