Two beakers `A` and `B` containing 20 gram $C a C l_{2}$ in 100 gram water and 20 gram NaCl in 100 gram water respectively, are placed side by side and covered by a jar at 298K. The jar is evacuated, after some time when equilibrium is reached, which among the following statement is/are correct at 298K?

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$C a C l_{2}$ solution will have lesser vapour pressure than NaCl solution before equilibrium

both the solution will have same osmotic pressure at equilibrium.

mole fraction of NaCl is more than mole fraction of $C a C l_{2}$ at equilibrium

mass of water in beaker A is less than the mass of water in beaker B at equilibrium

answer is B, C, D.

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Detailed Solution

Since moles of CaCl2 (0.54) is less then moles of NaCl (0.68) before equilibrium, so Solution of CaCl2 will have higher vapour pressure then NaCl solution.
Water will transfer from beaker `A` CaCl2 solution to beaker `B` NaCl solution so beaker `A will have lesser mass of water than beaker `B`

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