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Class 12 · Chemistry
→Assuming complete dissociation, what is the effective molarity of a 0.05 M K₄[Fe(CN)₆] solution?
Class 12 · Chemistry
→A solution has a van’t Hoff factor, i = 2.5. If the solute is of the type AB₂ and dissociates into ions, what is its degree of dissociation?
Class 12 · Chemistry
→The elevation in boiling point, ΔT_b, of a 0.1 m solute solution is lower than the value expected for a non-dissociated solute. What is the most probable reason?
Class 12 · Chemistry
→Among aqueous solutions of equal concentration, which solute will have the highest van’t Hoff factor, assuming complete ionisation?
Class 12 · Chemistry
→If the relative lowering of vapour pressure of a solution is 0.20 and the solute is non-volatile, what is the mole fraction of the solvent?
Class 12 · Chemistry
→A 0.1 M glucose solution and a 0.1 M NaCl solution are separated by a semipermeable membrane. If NaCl is completely dissociated, toward which solution will the net flow of water occur?
Class 12 · Chemistry
→A 0.4 m non-dissociated solution has a freezing-point depression of 0.744 K. What will be the freezing-point depression of a 0.2 m CaCl₂ solution in the same solvent if CaCl₂ dissociates completely?
Class 12 · Chemistry
→In which solution is the van’t Hoff factor i most likely to be less than 1 because of association of solute molecules?
Class 12 · Chemistry
→Due to the salts dissolved in seawater, which statement is correct compared with pure water?
Class 12 · Chemistry
→In a solution, 20% of the solute particles associate in pairs to form dimers. What is the value of the van’t Hoff factor i?
Class 12 · Chemistry
→If 0.05 m Al₂(SO₄)₃ dissociates completely, what will be its effective molality?
Class 12 · Chemistry
→For a salt of the type AB₂, the degree of dissociation is x. Which expression for the van’t Hoff factor i is correct?
Class 12 · Chemistry
→Which colligative property is most suitable for determining the molar mass of a high-molar-mass, heat-sensitive solute such as a protein?
Class 12 · Chemistry
→A solution contains 0.01 mol of a non-dissociated solute in 500 mL of solution. What is its osmotic pressure at 300 K?
Class 12 · Chemistry
→Which option correctly matches a colligative property with the concentration term conventionally used in its formula?
Class 12 · Chemistry
→Assuming complete dissociation, which of the following aqueous solutions of equal molality will show the greatest depression in freezing point?
Class 12 · Chemistry
→When 5 g of a non-dissociated solute is dissolved in 500 g of solvent, the boiling point rises by 0.052 K. If K_b = 0.52 K kg mol⁻¹, what is the molar mass of the solute?
Class 12 · Chemistry
→Among aqueous solutions of equal molality, assuming complete dissociation, which solution will show the greatest depression in freezing point?
Class 12 · Chemistry
→A 0.1 m non-dissociated solution has a boiling-point elevation of 0.052 K. What will be the boiling-point elevation of a 0.1 m K₂SO₄ solution in the same solvent on complete dissociation?
Class 12 · Chemistry
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