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Molar Mass Determination

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

ChemistryFor an AB2 salt, the observed molar mass is 5/9 of the true molar mass. What is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14MediumChemistryWhich colligative property can be used to find abnormal molecular mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 12EasyChemistryWhat is the best exam strategy while determining the molar mass of an unknown solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 12MediumChemistryA student uses 27 K instead of 27 °C in the osmotic-pressure method. How will the calculated molar mass compare with the correct value?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 12EasyChemistryIf the value of K_b is mistakenly taken as double, how will the molar mass calculated from boiling-point elevation change?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 12EasyChemistryWhy is comparing results from different colligative properties useful for accurately determining the molar mass of an unknown solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 12MediumChemistryWhy does the reliability of simple colligative formulas decrease if the solution is too concentrated during molar mass determination?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 12MediumChemistryIn molar-mass determination, under which condition will the value calculated from M = wRT/(πV) be higher than the true value?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18HardChemistryIf osmotic pressure increases due to factor (i), what is the corrected form of the osmotic-pressure relation?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18HardChemistryIf the solute sample contains an impurity during molar-mass determination, what is the usual effect?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18MediumChemistryIf the apparent molar mass of a solute approaches its true molar mass on dilution, what does this indicate?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18HardChemistryIf the freezing-point depression is mistakenly measured as lower than its true value, what is the mathematical effect on the calculated molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18MediumChemistryIn an experiment, the mass of the solvent is accidentally recorded as higher than its actual value. How will the molar mass calculated from freezing-point depression be affected?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18MediumChemistryIf 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 18HardChemistryWhich colligative property is most suitable for determining the molar mass of a high-molar-mass polymer?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18MediumChemistryTo double the osmotic pressure of a solution while keeping temperature and volume constant, what change is required in the amount of solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18EasyChemistryA solution has a van’t Hoff factor i = 0.5. What type of particle behaviour does this most clearly indicate?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18MediumChemistryIf both the mass of the solute and the mass of the solvent are doubled, what happens to the freezing-point depression, assuming the solute remains non-electrolytic and the solution remains dilute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18EasyChemistryWhat is the advantage of using a solvent with a larger Kf value in freezing-point-depression measurements?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18EasyChemistryWhen a solute is very sparingly soluble in a solvent, what should be checked most carefully before determining its molar mass by a colligative-property method?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium