Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Olympiad workbookNSECSolutions

At room temperature, NaCl ( s ) and KCl ( s ) were taken in equal masses and dissolved in equal volumes of water in two separate closed containers I and II respectively. Of the following, correct option/s is/are

Options

  1. ATo compare molarities in (I) and (II), masses of both the solutions need to be known
  2. BMolalities cannot be compared without measuring the mass of water added in each case
  3. CIf (I) and (II) are completely transferred into another container (III), [ Cl ⁻ ] in (III) will be sum of that
  4. DInformation given is sufficient to compare the vapour pressures in (I) and (II)

Correct answer

D. Information given is sufficient to compare the vapour pressures in (I) and (II)

Step-by-step solution

No Solution

Practice Solutions on Quantrex Academy →

More from Solutions

When 100 g each of the salts NaCl , MgSO ₄, Ca ( NO ₃ )₂, ~K ₂ CO ₃ , were dissolved separately in 1.0 kg of water, the solution with the highest boiling point will be ofAbout sea water, which of the following statement/s is/are correct? I. Frozen sea water melts at a lower temperature than pure ice II. Boiling point of sea water increases as it evA student intended to prepare 1000 mL of a 10 ppm solution of K ⁺ from KCl . He made appropriate calculations, weighed the salt accordingly and prepared the solution. However, afteA solution of CuSO ₄ 5 H ₂ O in methanol has [ Cu ²⁺ ]=1.00 mg per 1000 g of methanol. The molarity of Cu ²⁺ in this solution is Y 10⁻⁵ ~mol ~L ⁻¹ . Y is : ( . Given- density of meIn cold climate, the water in a radiator of a car gets frozen causing damage to the radiator. Ethylene glycol is used as an antifreezing agent. The amount of ethylene glycol that sThe mass ( g ) of NaCl that has to be dissolved to reduce the vapour pressure of 100 g of water by 10 % ( . Molar mass of . NaCl =58.5 ~g ~mol ⁻¹ ) isIn reverse osmosis the flow of solvent across semi permeable membrane occursWhen a certain amount of a univalent salt AB (molar mass =54 ~g ~mol ⁻¹ ) was dissolved in 0.1 dm ^3 of water, the relative lowering of the vapour pressure was found to be 3.55 % . Full Solutions list All Olympiad workbook PYQs