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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 a \(0.5\,\mathrm{mol\,kg^{-1}}\) solution contains \(250\,\mathrm{g}\) of solvent, how many moles of solute are present?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Easy ChemistryIn the freezing-point-depression method, \(K_f=1.86\,\mathrm{K\,kg\,mol^{-1}}\), \(\Delta T_f=0.93\,\mathrm{K}\), and the solute is non-dissociating. What is the molality?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Easy ChemistryIf a 0.2 mol kg⁻¹ non-dissociating solution has K_f = 1.86 K kg mol⁻¹, what is the freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 17Easy ChemistryIf the mass of a non-dissociating solute remains the same but the mass of the solvent is doubled, what happens to the freezing-point depression?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIn the freezing-point depression method, what problem occurs if the total mass of the solution is mistakenly used as the mass of the solvent?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryFor a non-dissociating solute, Kb = 0.52 K kg mol⁻¹ and the molality is 0.5 mol kg⁻¹. What is the elevation in boiling point?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Easy ChemistryIf 1 g of solute is dissolved in 200 g of solvent and its molar mass is 50 g mol⁻¹, what is the molality of the solution?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Easy ChemistryIn the freezing-point depression method, 1.0 g of solute is dissolved in 100 g of solvent. If Kf = 2.0 K kg mol⁻¹ and ΔTf = 0.20 K, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryWhich mistake can make the result most incorrect in molar-mass determination by a colligative-property method?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIf 1.5 g solute forms a 0.05 m solution in 300 g solvent, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 2 g solute is dissolved in 200 g water, the molality is 0.1 m. What is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIf a 0.1 m non-dissociated solution has 0.3 kg solvent and 3.6 g solute, what is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryA non-dissociated solute of mass 8 g is dissolved in 0.25 kg solvent and the molality is 0.4 m. What is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIf for a solution ΔT_b = 0.208 K, K_b = 0.52 K kg mol⁻¹, and the solvent mass is 0.25 kg, how many moles of solute are present?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 2 g of a solute is dissolved in 250 g of solvent, the boiling-point elevation is 0.052 K. If Kb = 0.52 K kg mol⁻¹, what is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 1 g of a non-dissociated solute is dissolved in 100 g of water, the freezing-point depression is 0.093 K. If Kf = 1.86 K kg mol⁻¹, what is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIf 2 g of a solute dissolved in 0.2 kg of solvent gives a molality of 0.1 m, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Easy ChemistryIn the boiling-point-elevation method, how should 100 g of solvent be expressed for use in the molality calculation?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Easy ChemistryWhich sequence is most appropriate for determining molar mass from depression in freezing point?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIn a solution, 6 g of a non-dissociated solute gives a molality of 0.12 m. If the solvent mass is 0.5 kg, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium