Which one of the following is the ratio of th | vedclass

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(A) Lowering of vapour pressure is a colligative property,which depends on the number of particles of the solute (van't Hoff factor,$i$).For $0.1 \ M$

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$3 : 2 : 5$

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(A) Lowering of vapour pressure is a colligative property,which depends on the number of particles of the solute (van't Hoff factor,$i$).For $0.1 \ M$ aqueous solutions,the relative lowering of vapour pressure is proportional to the number of ions produced upon dissociation.$BaCl_2 \rightarrow Ba^{2+} + 2Cl^-$; $i = 3$$NaCl \rightarrow Na^+ + Cl^-$; $i = 2$$Al_2(SO_4)_3 \rightarrow 2Al^{3+} + 3SO_4^{2-}$; $i = 5$Thus,the ratio of the lowering of vapour pressure for $BaCl_2 : NaCl : Al_2(SO_4)_3$ is $3 : 2 : 5$.

Which one of the following is the ratio of the lowering of vapour pressure of $0.1 \ M$ aqueous solutions of $BaCl_2, NaCl$ and $Al_2(SO_4)_3$ respectively?

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