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Class 12 · Chemistry · Easy
→If the vapour pressure of a solution is p and that of the pure solvent is p⁰, what is the relative lowering of vapour pressure?
Class 12 · Chemistry · Easy
→Which statement is correct about the depression of the freezing point of a solution?
Class 12 · Chemistry · Medium
→Which colligative property is most suitable for determining the molar mass of a high-molar-mass protein?
Class 12 · Chemistry · Easy
→Why does a red blood cell generally retain its size when placed in an isotonic solution?
Class 12 · Chemistry · Medium
→If a 0.1 m solution has a boiling-point elevation of 0.104 K and Kᵦ = 0.52 K kg mol⁻¹, what is the van’t Hoff factor i?
Class 12 · Chemistry · Easy
→Among aqueous solutions of equal molality, assuming complete dissociation, which solute will have the highest van’t Hoff factor?
Class 12 · Chemistry · Medium
→A solution shows an osmotic pressure of 0.615 atm at 25 °C. If R = 0.082 L atm mol⁻¹ K⁻¹, what is the approximate molarity of the non-dissociated solute?
Class 12 · Chemistry · Medium
→If the number of effective solute particles doubles while molality and solvent remain the same, what happens to the freezing-point depression?
Class 12 · Chemistry · Medium
→Why is osmotic pressure more suitable for determining the molar mass of large biomolecules?
Class 12 · Chemistry · Easy
→Which property depends only on the number of solute particles present in a solution and not on the chemical nature of the solute?
Class 12 · Chemistry · Medium
→If the freezing-point depression of a solution is 2.5 times the expected value for a non-dissociated solute, what is the value of the van’t Hoff factor i?
Class 12 · Chemistry · Easy
→Why does the boiling point of a solution increase when a non-volatile solute is added?
Class 12 · Chemistry · Easy
→Which change is most likely when solute association occurs in a solution?
Class 12 · Chemistry · Medium
→If the observed van’t Hoff factor for \(\mathrm{Ca(NO_3)_2}\) is \(i=2.6\), what is its degree of dissociation? Assume that association is negligible.
Class 12 · Chemistry · Medium
→What is the osmotic pressure of a \(0.05\,\mathrm{M}\) \(\mathrm{CaCl_2}\) solution at \(300\,\mathrm{K}\), assuming complete dissociation? Take \(R=0.082\,\mathrm{L\,atm\,mol^{-1}\,K^{-1}}\).
Class 12 · Chemistry · Easy
→Which of the following equimolal solutions will have the highest freezing point, assuming ideal behaviour?
Class 12 · Chemistry · Medium
→If the observed molar mass of KCl is \(\frac{2}{3}\) of its true molar mass, what is the value of the van’t Hoff factor \(i\)?
Class 12 · Chemistry · Easy
→In a dilute solution, the mole fraction of solute is 0.04. Assuming a non-volatile solute, what is the relative lowering of vapour pressure?
Class 12 · Chemistry · Easy
→Among aqueous solutions of equal molality, assuming complete ionisation, which solute will produce the greatest depression in freezing point?
Class 12 · Chemistry · Medium
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