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Chapter 01 Solutions

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

ChemistryIf NaCl is completely dissociated and its true molar mass is 58.5 g mol^-1, what will be its ideal observed molar mass approximately?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 ChemistryThe true molar mass of a substance is 60 g mol^-1, but the freezing-point method gives an observed molar mass of 30 g mol^-1. What is the value of 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 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 ChemistryIf 0.5 g of a solute dissolved in 50 g of water produces ΔT_f = 0.186 K, what is its molar mass when K_f = 1.86 K kg mol⁻¹?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium 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 ChemistryIf 1.2 g of a solute forms a 0.02 m solution and the solvent mass is 0.5 kg, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryWhen 4 g of a non-dissociated solute is used to prepare 500 mL of solution, its osmotic pressure at 300 K is 0.984 atm. What is the molar mass? Take R = 0.082 L atm mol⁻¹ K⁻¹.Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium 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 ChemistryWhen 2.5 g of a non-dissociated solute is dissolved in 100 g of solvent, the boiling-point elevation is 0.13 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 18Medium ChemistryWhen 3 g of a non-dissociated solute is dissolved in 200 g of water, ΔT_f = 0.279 K. If K_f = 1.86 K kg mol⁻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 ChemistryWhat should be done first in a numerical problem on molar-mass determination?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 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