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Chapter 01 Solutions

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

ChemistryIf a solute is completely non-dissociating but a student uses i = 2, what will happen to the molar mass calculation?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryWhat common principle is used in molar mass determination by both boiling-point elevation and freezing-point depression?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIf the actual molar mass of a solute is 60 g mol⁻¹ but the experimental value is 120 g mol⁻¹, which conclusion is suitable?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIf the actual molar mass of a solute is 180 g mol⁻¹ but the experimental value is 90 g mol⁻¹, which process is possible?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIn molar-mass determination, if a solute dissociates into ions, which correction is required in the formula?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Medium ChemistryUnder which condition is the molar mass obtained from a colligative-property measurement most reliable?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 17Medium ChemistryWhen calculating molar mass by the osmotic-pressure method at \(27^\circ\mathrm{C}\), what temperature value should be used?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Easy ChemistryWhat happens if \(w_A\) and \(w_B\) are interchanged in a molar-mass determination formula?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryThe normal molar mass of a solute is \(90\,\mathrm{g\,mol^{-1}}\). If the van’t Hoff factor is \(i=3\), what will be the observed molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Medium ChemistryIf a 0.2 mol kg⁻¹ non-dissociating solution has K_f = 1.86 K kg mol⁻¹, what is the freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 17Easy ChemistryIf the observed molar mass of a substance is double its normal value, what is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Easy ChemistryIf the observed molar mass of a substance is half of its normal value, what is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Easy ChemistryA solution has 3 g of solute dissolved in 250 g of solvent. If K_b = 0.5 K kg mol⁻¹ and ΔT_b = 0.30 K, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIf the K_b value of the wrong solvent is used while calculating molar mass from boiling-point elevation, what will happen?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Easy ChemistryIf the mass of a non-dissociating solute remains the same but the mass of the solvent is doubled, what happens to the freezing-point depression?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryWhy can an error occur in molar mass determination if the solution is too concentrated?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIf the osmotic pressure of a 0.1 M solution is to be found at 300 K and the solute is non-dissociating, which formula is simplest?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 17Easy ChemistryA solution contains 2 g of solute in 500 mL of solution. If the molar mass is 100 g mol⁻¹, what is the molar concentration?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 17Easy ChemistryIf a solute associates to form dimers, why does the molar mass obtained from colligative properties generally increase?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Medium ChemistryIf the van’t Hoff factor is 2 and the normal molar mass is 100 g mol⁻¹, what is the observed molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Easy