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Class 12 · Chemistry · Medium
→A salt MX₂ is 75% dissociated. Since it gives three ions on complete dissociation, what is its van’t Hoff factor?
Class 12 · Chemistry · Hard
→An acid dimerises in benzene. The expected freezing-point depression is 0.50 K, but the observed value is 0.30 K. What is the approximate degree of association?
Class 12 · Chemistry · Medium
→A solute has true molar mass 120 g mol⁻¹ and apparent molar mass 80 g mol⁻¹. What is its van’t Hoff factor?
Class 12 · Chemistry · Medium
→An electrolyte AB is 60% dissociated into A⁺ and B⁻. What is its van’t Hoff factor?
Class 12 · Chemistry · Medium
→A solute completely dimerises in solution. If its true molar mass is M, what apparent molar mass is obtained from freezing-point depression?
Class 12 · Chemistry · Medium
→A solute has normal molar mass 56 and observed molar mass 28. What is the most suitable explanation?
Class 12 · Chemistry · Medium
→A solute has normal molar mass 80 and observed molar mass 160. Which process is possible?
Class 12 · Chemistry · Medium
→A substance has normal molar mass 150 and van’t Hoff factor 1.5. What is its observed molar mass?
Class 12 · Chemistry · Easy
→What is the ideal van’t Hoff factor for NH₄Cl on complete dissociation?
Class 12 · Chemistry · Easy
→What is the van’t Hoff factor for SrCl₂ on complete dissociation?
Class 12 · Chemistry · Easy
→In a question on abnormal molar mass, what should usually be decided first?
Class 12 · Chemistry · Easy
→Why is the van’t Hoff factor usually taken as 1 for sugar dissolved in water?
Class 12 · Chemistry · Easy
→If A₃B undergoes complete dissociation, what is the ideal van’t Hoff factor?
Class 12 · Chemistry · Medium
→If an A₂B-type solute is 60% dissociated, what is the van’t Hoff factor?
Class 12 · Chemistry · Medium
→If the elevation in boiling point is three times the expected value, what is the most suitable conclusion?
Class 12 · Chemistry · Medium
→In which solution can i be less than 1?
Class 12 · Chemistry · Medium
→In which solution is i most likely to be greater than 1?
Class 12 · Chemistry · Easy
→If i = 0.75, which statement about the observed molecular mass is correct?
Class 12 · Chemistry · Easy
→If i = 4, the observed molecular mass will be what fraction of the normal molecular mass?
Class 12 · Chemistry · Easy
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