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Dissociation

Class 12 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryIf NaCl is 50% dissociated, what is the approximate value of i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryIf the normal molecular mass is 58.5 and the observed molecular mass is 29.25, what is the value of i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryIn which case will the observed depression in freezing point be greater than the normal value?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryIf K₂SO₄ undergoes complete dissociation, what is the ideal value of the van’t Hoff factor i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryIf CaCl2 dissociates completely, what is the ideal i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryIf NaCl dissociates completely in water, what is the ideal value of i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryIf van’t Hoff factor i > 1, which situation is generally present?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryWhat happens to the observed molecular mass when solute particles dissociate into more particles in solution?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryWhen is abnormal molecular mass usually observed?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12EasyChemistryA solution has a van’t Hoff factor i = 1.8. If the solute can dissociate into two ions, what is the nature of its dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18HardChemistryIf the molar mass calculated from boiling-point elevation is lower than the true molar mass, which correction is most appropriate when dissociation is responsible?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18HardChemistryA solute gives molar masses of 120 g mol⁻¹ by boiling-point elevation and 60 g mol⁻¹ by osmotic pressure. If both experiments are reliable, what is the most probable explanation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18HardChemistryIf a solute completely dissociates into three ions in solution, how will its apparent molar mass compare with its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18MediumChemistryA solute has a true molar mass of 60 g mol⁻¹, but freezing-point depression gives an apparent molar mass of 30 g mol⁻¹. What is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18MediumChemistryThe molar mass of a solute determined by osmotic pressure is lower than its normal value. What is the most suitable reason?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18MediumChemistryA solute of concentration 0.02 M has an osmotic pressure of 0.984 atm at 300 K. If R = 0.082 L atm mol⁻¹ K⁻¹, what is the van’t Hoff factor (i), and what does it indicate about the solute’s behaviour?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17HardChemistryIf the true molar mass of a solute is 240 g mol⁻¹ and the colligative method gives an observed molar mass of 160 g mol⁻¹, what are i and the probable behaviour of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17HardChemistryIf the observed molar mass of a solute is 0.4 times the true molar mass, what is the van’t Hoff factor and the probable behaviour of the solute?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17HardChemistryAn AB-type solute is 60% dissociated. If its observed molar mass is 75 g mol⁻¹, what is its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17MediumChemistryWhich statement is most correct in molar-mass determination when a solute dissociates or associates?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium