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Class 12 · Chemistry
→If 2 g of a solute dissolved in 0.2 kg of solvent gives a molality of 0.1 m, what is the molar mass of the solute?
Class 12 · Chemistry
→In the boiling-point-elevation method, how should 100 g of solvent be expressed for use in the molality calculation?
Class 12 · Chemistry
→What is the correct sequence for determining molar mass by the osmotic-pressure method?
Class 12 · Chemistry
→Which sequence is most appropriate for determining molar mass from depression in freezing point?
Class 12 · Chemistry
→If a solute undergoes association, how will the molar mass obtained by a colligative-property method compare with its true molar mass?
Class 12 · Chemistry
→If a solute undergoes dissociation, how will the molar mass calculated without applying the van’t Hoff factor compare with the true molar mass?
Class 12 · Chemistry
→For determining the molar mass of large molecules, which method does not require measurement of very small temperature changes?
Class 12 · Chemistry
→A non-dissociated solute forms a 0.04 M solution of volume 250 mL, and the solute mass is 1.2 g. What is the molar mass?
Class 12 · Chemistry
→If 2 L of a 0.01 M solution contains 3.6 g of solute, what is the molar mass of the solute?
Class 12 · Chemistry
→If a solution has a concentration of 0.05 M and contains 2 g of solute per 250 mL of solution, what is the molar mass?
Class 12 · Chemistry
→A 500 mL solution is prepared from 3.6 g of a non-dissociated solute. Its osmotic pressure at 300 K is 0.738 atm. What is the molar mass?
Class 12 · Chemistry
→In the osmotic pressure method, 2 g of a solute is used to prepare 1 L of solution. At 300 K, the osmotic pressure is 0.492 atm. If R = 0.082 L atm mol⁻¹ K⁻¹, what is the molar mass?
Class 12 · Chemistry
→If the observed molar mass is 1.25 times the true molar mass, what is the van’t Hoff factor (i)?
Class 12 · Chemistry
→If the observed molar mass of a solute is 2/3 of its true molar mass, what is the van’t Hoff factor (i)?
Class 12 · Chemistry
→Which colligative property is most suitable for determining the molar mass of polymers with very high molar masses?
Class 12 · Chemistry
→While determining molar mass by the lowering of vapour pressure method, if a solute undergoes complete dimerisation in benzene, how will its observed molar mass compare with its true molar mass?
Class 12 · Chemistry
→If NaCl is completely dissociated and its true molar mass is 58.5 g mol^-1, what will be its ideal observed molar mass approximately?
Class 12 · Chemistry
→Which colligative property is most suitable for determining the molar mass of a polymer with very high molar mass?
Class 12 · Chemistry
→The true molar mass of a substance is 60 g mol^-1, but the freezing-point method gives an observed molar mass of 30 g mol^-1. What is the value of the van't Hoff factor i?
Class 12 · Chemistry
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