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

ChemistryA solute of concentration 0.02 M has an osmotic pressure of 0.984 atm at 300 K. If R = 0.082 L atm mol⁻¹ K⁻¹, what is the van’t Hoff factor (i), and what does it indicate about the solute’s behaviour?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard ChemistryWhen 4 g of a non-volatile solute is dissolved in 36 g of water, the relative lowering of vapour pressure is 0.08. What is the approximate molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard ChemistryA solution contains 2.4 g of solute in 400 mL of solution. Its osmotic pressure at 300 K is 0.492 atm. If i = 0.8, what is the true molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard ChemistryIf the true molar mass of a solute is 180 g mol⁻¹ and 30% dimerization occurs, what will be the approximate observed molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Hard ChemistryA solute has an observed molar mass of 72 g mol⁻¹. If it is of A₂B type and is 40% dissociated, what is its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Hard ChemistryIn the vapour-pressure method, p⁰ = 120 mmHg and p = 114 mmHg. If 3 g of solute is dissolved in 54 g of water, what is the approximate molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard ChemistryFeCl₃ is 60% dissociated. If its observed molar mass is 81.25 g mol⁻¹, what is its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Hard ChemistryWhen 1.8 g of a solute is dissolved in 150 g of water, the depression in freezing point is 0.279 K. If i = 0.75, what is the true molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard ChemistryWhen 2.4 g of a solute is dissolved in 200 g of solvent, the elevation in boiling point is 0.156 K. If Kb = 0.52 K kg mol⁻¹ and i = 1.5, what is the true molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard ChemistryIf the observed molar mass of a solute is 1.6 times the true molar mass, what is the van’t Hoff factor and the probable behaviour of the solute?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Hard ChemistryIf the observed molar mass of a solute is 0.4 times the true molar mass, what is the van’t Hoff factor and the probable behaviour of the solute?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Hard ChemistryIn 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 17Medium ChemistryIf an AB₂ solute has a van’t Hoff factor of 2.2 and a true molar mass of 132 g mol⁻¹, what are its observed molar mass and degree of dissociation, respectively?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryAn AB solute has a van’t Hoff factor of 1.4 and an observed molar mass of 75 g mol⁻¹. What are its true molar mass and degree of dissociation, respectively?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 5 g of a non-volatile solute is dissolved in 45 g water, the relative lowering of vapour pressure is 0.10. What is the approximate molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Hard ChemistryA 1.0 L solution is prepared by dissolving 2.2 g of a substance. Its osmotic pressure at 300 K is 0.451 atm. If R = 0.082 L atm K⁻¹ mol⁻¹, what is the approximate molar mass of the substance?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryWhen 1.5 g of a non-electrolyte substance is dissolved in 250 g of a solvent, the depression in freezing point is 0.1116 K. If the cryoscopic constant of the solvent is 1.86 K kg mol⁻¹, what is the molar mass of the substance?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryA 250 mL solution is prepared using 0.25 g of a polymer. Its osmotic pressure at 300 K is 0.041 atm. If R = 0.082 L atm K−1 mol−1, what is the molar mass of the polymer?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Hard ChemistryWhen 2.0 g of a nonelectrolyte is dissolved in 100 g of solvent, the boiling point of the solution is 373.104 K. The boiling point of the pure solvent is 373.000 K and Kb = 0.52 K kg mol−1. What is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Hard ChemistryWhen 1.2 g of a nonelectrolyte is dissolved in 100 g of solvent, the freezing point of the solution is 272.814 K. The freezing point of the pure solvent is 273.000 K and Kf = 1.86 K kg mol−1. What is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Hard