Match column I containing magnitude of observed colligative property with column II having concentration of electrolytes. Assume all solutions to behave like very dilute aqueous solution with perfectl

Question

Match column I containing magnitude of observed colligative property with column II having concentration of electrolytes. Assume all solutions to behave like very dilute aqueous solution with perfectly non-volatile solute.

List - I	List - II
(P) x	(1) At equlilibrium for the reaction $A (g) ⇌ B (g), r_{f} = r_{b} = x$ mole $1^{- 1} s^{- 1}$ . If some $A (g)$ is added in the equilibrium mixture at constant volume, then at new equlibrium $r_{r} = r_{b} = α$ mole $1^{-}^{1} s^{- 1}$ . The value of $α$ is
(Q) More than x	(2) 1 mole urea +1 kg water : $Δ T_{b} = x^{\circ} C \frac{1}{2}$ mole glucose +1 kg water : $Δ T_{b} = d^{\circ} C$ then d is
(R) $\frac{x}{2}$	(3) The density of perfectly crystalline zinc sulphide is $x kg / m^{3}$ . If a real crystal of zinc sulphide has some Frenkel defect, its density is $e kg / m^{3}$ . The value of e is

TestHub · Accepted Answer

On adding A(g) to the equilibrium mixture, the forward reaction rate increases, and at the new equilibrium, both forward and backward rates become equal and greater than $x$ . For boiling point elevation, $Δ T_{b} \propto$ molality; therefore, $0.5$ mol glucose produces $Δ T_{b} = \frac{x}{2}$ if $1$ mol urea gives $x$ . In a Frenkel defect, ions are only displaced from their lattice sites, so the mass and volume of the crystal remain unchanged, and hence the density remains $x$

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