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Class 12 · Chemistry
→If the van’t Hoff factor of MgCl₂ is 2.8, what is the degree of dissociation?
Class 12 · Chemistry
→A solute has 25% of its particles forming dimers and 30% forming tetramers; the rest remain single. What is i?
Class 12 · Chemistry
→A solution has i = 1.75. Which statement is definitely correct?
Class 12 · Chemistry
→For a solute, i = 4/3. If it dissociates into two ions, what is the degree of dissociation?
Class 12 · Chemistry
→For a 0.10 m solution, the normal freezing-point depression is 0.186 K and the observed depression is 0.372 K. Which conclusion is correct?
Class 12 · Chemistry
→The elevation in boiling point is 25% lower than expected. If the cause is dimer association, what is the apparent molar mass relative to the true mass?
Class 12 · Chemistry
→An AB₄ electrolyte is 30% dissociated. What is the value of i?
Class 12 · Chemistry
→A colligative property is 0.40 times the normal value. If the solute forms only trimers, what is the degree of association?
Class 12 · Chemistry
→For Na₂SO₄, i = 2.2. What is the approximate degree of dissociation?
Class 12 · Chemistry
→A solute has i = 0.55 and a true molar mass of 110 g mol⁻¹. What is its apparent molar mass?
Class 12 · Chemistry
→A solution has i = 2.5. Which situation matches this value?
Class 12 · Chemistry
→An XY electrolyte has i = 1.35. If its formal concentration is 0.10 M, what is the effective particle concentration?
Class 12 · Chemistry
→Seventy-five percent of a solute forms dimers. What are i and the observed colligative property relative to normal?
Class 12 · Chemistry
→If the apparent molar mass is 25% greater than the true molar mass, what is the approximate value of i?
Class 12 · Chemistry
→A solute has i = 0.625 and forms only tetramers. What is the degree of association?
Class 12 · Chemistry
→Out of 100 initial AB₃ units, 25 units dissociate. What is the total number of effective particles?
Class 12 · Chemistry
→A salt MCl₂ has i = 2.4. If complete dissociation gives three ions, what is the apparent molar mass as a fraction of the true molar mass?
Class 12 · Chemistry
→If Kb = 0.80 K kg mol⁻¹, m = 0.25 mol kg⁻¹, and the observed boiling-point elevation is 0.10 K, what is i and what does it indicate?
Class 12 · Chemistry
→The osmotic pressure of a 0.05 M electrolyte at 300 K is 2.46 atm. Take R = 0.082 L atm mol⁻¹ K⁻¹. What is i?
Class 12 · Chemistry
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