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Class 12 · Chemistry · Easy
→Which colligative property is most suitable for determining the molar mass of polymers with very large molecules?
Class 12 · Chemistry · Medium
→If 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 11 · Chemistry · Easy
→A solution contains 2 g of solute and 0.01 mol of the solute. If the solute is non-dissociated, what is its molar mass?
Class 11 · Chemistry · Easy
→If 5 g of a non-dissociated solute produces a molality of 0.25 m in 0.2 kg of solvent, what is the molar mass of the solute?
Class 12 · Chemistry · Easy
→Which colligative property is generally preferred for determining the molar mass of high-molar-mass solutes such as proteins and polymers?
Class 12 · Chemistry · Medium
→When 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 12 · Chemistry · Medium
→When 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 12 · Chemistry · Medium
→If 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 12 · Chemistry · Medium
→In 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 12 · Chemistry · Medium
→If 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 12 · Chemistry · Medium
→When 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 12 · Chemistry · Medium
→A 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 12 · Chemistry · Medium
→When 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 12 · Chemistry · Medium
→When 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 12 · Chemistry · Medium
→Which property forms the basis for determining the molar mass of a solute using a colligative property such as freezing-point depression?
Class 12 · Chemistry · Easy
→What should be done first in a numerical problem on molar-mass determination?
Class 12 · Chemistry · Easy
→In which case is it safest to treat the observed molar mass as the normal molar mass?
Class 12 · Chemistry · Easy
→Measurement of the osmotic pressure of a solution is especially suitable for determining the molar mass of which type of solute?
Class 12 · Chemistry · Medium
→If 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 12 · Chemistry · Medium
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