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  4. The highest osmotic pressure corresponds to the following solution

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Q. The highest osmotic pressure corresponds to the following solution

AMUAMU 2012Solutions

Solution:

Osmotic pressure, $\pi = icRT$
For urea and glucose, $i = 1$
For $HCl$ and $BaCl_2, i > 1$
Due to high ionisation of $BaCl_2$ than $HCl$,
$i_{BaCl_2} > i_{HCl}$
$\therefore $ Order of osmotic pressure will be
$BaCl > HCl >$ Urea $=$ glucose