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Vapour Pressure

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

ChemistryThe relative lowering of vapour pressure of a solute is 40% higher than expected. What value of i should be taken?Class 12Chapter 01: Solutions4: Vapour PressureLevel 11EasyChemistryIn an experiment, the relative lowering of vapour pressure is 30% greater than the normal value. What should i be taken as?Class 12Chapter 01: Solutions4: Vapour PressureLevel 6EasyChemistryIf the relative lowering of vapour pressure is half the expected value for a normal solute, what is i approximately?Class 12Chapter 01: Solutions4: Vapour PressureLevel 6EasyChemistryIn which situation is the molar mass calculated from relative lowering of vapour pressure most likely to be lower than the true value?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 6EasyChemistryThe lowering of vapour pressure is 1.6 times the normal value. If the solute dissociates into two ions, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryThe relative lowering of vapour pressure of a non-volatile solute is lower than expected. Which conclusion is most correct?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 9EasyChemistryIf the relative lowering of vapour pressure is 0.02 and solute moles are very small compared with solvent moles, what is the approximate mole fraction of solute?Class 12Chapter 01: Solutions4: Vapour PressureLevel 12EasyChemistryIn molar mass determination, the condition of a non-volatile solute is most directly connected with which method?Class 12Chapter 01: Solutions4: Vapour PressureLevel 12EasyChemistryWhat problem occurs in molar-mass determination by relative lowering of vapour pressure if the solute is also volatile?Class 12Chapter 01: Solutions4: Vapour PressureLevel 18HardChemistryIn the vapour-pressure method, the mole fraction of a solute is 0.05. If 2.0 g of solute is dissolved in 18 g of water, what is the approximate molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryIn the vapour-pressure method, the mole fraction of solute is found to be 0.04. If 1.8 g solute was dissolved in 18 g water, what is the approximate molar mass of the solute?Class 12Chapter 01: Solutions4: Vapour PressureLevel 16HardChemistryThe relative lowering of vapour pressure is 0.05. If 1 g of solute is dissolved in 18 g of water, what is the approximate molar mass of the solute?Class 12Chapter 01: Solutions4: Vapour PressureLevel 16HardChemistryIn a vapour-pressure method, the mole fraction of the solute is x₂ = 0.02. If 0.18 g of solute is dissolved in 9 g of water, what is the approximate molar mass of the solute?Class 12Chapter 01: Solutions4: Vapour PressureLevel 16HardChemistryIn a solution, the true molar mass of the solute is 100 g mol⁻¹, but the vapour-pressure method gives an observed molar mass of 50 g mol⁻¹. Which conclusion is correct?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16MediumChemistryA solution has relative lowering of vapour pressure \(0.02\). If the total number of moles in the solution is \(5.0\), how many moles of solute are present?Class 12Chapter 01: Solutions4: Vapour PressureLevel 17MediumChemistryWhy is the vapour-pressure method considered comparatively difficult for molar mass determination?Class 12Chapter 01: Solutions4: Vapour PressureLevel 17MediumChemistryIf the relative lowering of vapour pressure is 0.02 and the number of moles of solvent is 9.8, approximately how many moles of solute are present in the dilute solution?Class 12Chapter 01: Solutions4: Vapour PressureLevel 18MediumChemistryWhile determining molar mass from lowering of vapour pressure, the mole fraction of the solute is related to which quantity?Class 12Chapter 01: Solutions4: Vapour PressureLevel 17EasyChemistryIn the vapour-pressure-lowering method, the relative lowering for a dilute solution is approximately equal to what?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 18MediumChemistryIf the solute is non-volatile, which law is useful for determining molar mass from lowering of vapour pressure?Class 12Chapter 01: Solutions4: Vapour PressureLevel 18Easy