Search questions
Use text search or combine filters to find exactly the questions you need.
Class 12 · Chemistry
→For a non-electrolyte with neither association nor dissociation, what is the value of i?
Class 12 · Chemistry
→In a boiling-point elevation experiment, the observed molar mass of a solute is three times its true molar mass. Which particle change is it closest to?
Class 12 · Chemistry
→If a solute has i = 1.25 and dissociates into two ions, what is its degree of dissociation?
Class 12 · Chemistry
→Which observation best represents abnormal molar mass caused by association?
Class 12 · Chemistry
→A colligative property gives a van’t Hoff factor of i = 3. If the solute behaves like AlCl₃ and produces four ions on complete dissociation, what is its degree of dissociation?
Class 12 · Chemistry
→If AB is 50% dissociated into A⁺ and B⁻, what fraction of the true molar mass will be observed?
Class 12 · Chemistry
→A solute undergoes 40% dimerisation. What is its van’t Hoff factor?
Class 12 · Chemistry
→If Kf and the measured masses are correct, but the freezing-point depression is greater than expected, what is the most likely cause of the abnormal molar mass?
Class 12 · Chemistry
→A substance has a true molar mass of 120 g mol⁻¹, while the molar mass measured by the freezing-point method is 180 g mol⁻¹. What is i?
Class 12 · Chemistry
→If a solute has i = 0.5, which statement about its particles is correct?
Class 12 · Chemistry
→An AB₂ salt undergoes 60% dissociation. What is its van’t Hoff factor in dilute solution?
Class 12 · Chemistry
→A 1:1 electrolyte is 80% dissociated. What is its van’t Hoff factor?
Class 12 · Chemistry
→Benzoic acid is nearly dimerised in benzene. How will its molar mass measured by freezing-point depression compare with its true molar mass?
Class 12 · Chemistry
→In an ideal dilute solution, the molar mass measured from osmotic pressure is half the true molar mass. What is the most suitable conclusion about the solute particles?
Class 12 · Chemistry
→A student calculates the molar mass of AlCl3 by assuming i = 1, although the actual i is 3.4. What is the apparent molar mass relative to the true molar mass?
Class 12 · Chemistry
→A solute has i = 1.25. What is the ratio of its apparent molar mass to its true molar mass?
Class 12 · Chemistry
→A solution should normally have an osmotic pressure of 2.00 atm, but its actual osmotic pressure is 3.20 atm. If the solute dissociates into two ions, what is the degree of dissociation?
Class 12 · Chemistry
→For a solute with i = 1.6, if it dissociates into three ions, what is the degree of dissociation?
Class 12 · Chemistry
→A solute undergoes 70% tetramerisation. If the normal freezing-point depression is 0.80 K, what is the observed depression?
Class 12 · Chemistry
→