compared to osmotic pressure of 0.1M urea, the osmotic pressure of 0.01 M KCl will be (assume 100% dissosiation) aprrox?

Dear student,
The osmotic pressure of ureaπurea = MRT 
where 'M' is molarity , 'T' is the temperature 
so πurea=0.1RT
Since KCl is strong electrolyte i=2
so πKCl=iMRT
πKCl=2×0.01×RT
Putting the values of RT from equation of urea into equation of osmotic pressure
we get
πKCl=0.02×πurea0.1
πKCl= 0.2πurea
Therefore the osmotic pressure of KCl is 0.2 times the osmotic pressure of urea
Regards!
 

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