Statement I : Ether can extract LiCl from the aqueous solution of a mixture of LiCl, NaCl and KCl.

Statement II : Hydration of Li⁺ ion is greater than that of Na⁺ and K⁺ ions

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Statement I and II are correct and statement II is the correct explanation of I

Statement I and II are correct but statement II is not the correct explanation of I

Statement - I is correct and Statement- II is incorrect

Both statement - I and statement - II are incorrect

answer is B.

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Detailed Solution

Ether can extract LiCl from the aqueous solution of a mixture of LiCl , NaCl and KCl mixed and shaked well, the water is polar solvant and hence polar compounds KCl, NaCl moves into water, where as the non-polar compound LiCl moves into non polar ether solvent

Principle involved here is like dissolves like polar compounds soluble in polar solvents [H₂O] where as non polar compound soluble in non polar solvents [Ether]

\large Degree\;of\;hydration\;:\;\xrightarrow{{Li_{(aq)}^ + \; > \;Na_{(aq)}^ + \; + \;K_{(aq)}^ + \; > \;Rb_{(aq)}^ + }}

As the size of alkali metal ion increases nuclear charge density decreases hence attraction of water molecules decreases therefore degree of hydraction decreases