Which of the following solutions in water pos | vedclass

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(B) The lowering of vapour pressure is a colligative property,which depends on the number of particles (van't Hoff factor,$i$) in the solution. $BaCl_

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$0.1 \ (M) \ BaCl_2$

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(B) The lowering of vapour pressure is a colligative property,which depends on the number of particles (van't Hoff factor,$i$) in the solution. $BaCl_2$ dissociates as $BaCl_2 \rightarrow Ba^{2+} + 2Cl^-$,giving $3$ ions per formula unit $(i = 3)$. $NaCl$ dissociates as $NaCl \rightarrow Na^+ + Cl^-$,giving $2$ ions per formula unit $(i = 2)$. $KCl$ dissociates as $KCl \rightarrow K^+ + Cl^-$,giving $2$ ions per formula unit $(i = 2)$. Since $BaCl_2$ produces the highest number of particles,it causes the greatest lowering of vapour pressure,resulting in the lowest vapour pressure among the given options.

Which of the following solutions in water possesses the lowest vapour pressure?

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