Observe the following observations :
`pi_(obs)=` observed colligative property
`pi_(cal)=` theoretical colligative property assuming normal behaviour of solute
van't Hoff factor (i) is given by :

van't Hoff factor (i) is given by the expression

van't Hoff factor (i) is given by the expression

Colligative properties are observed when

If observed value of the colligative property is more than the normal value of same property then Van't Hoff factor is more than one.

Colligative properties i.e., the properties of solution which depends upon the number pf aprticles present in solution are osmotic pressure, depression in freezing point, elevation in boiling point and lowering in vapour pressure. Experimental values of colligative properties for electroetically because electrolytes dissociates to furnish more ions in solution. On the other hand experimentally obtained values of colligative properties for associating nature of solute ate lower than those obtained theoretically. The ratio of experimantal colligative properties to theoretical colligative properties is called as van't Hoff factor (i) . van,t Hoff factor (i) for dimerisation of benzoic acid in water, assuming 30% degree of association is:

Colligative properties i.e., the properties of solution which depends upon the number pf aprticles present in solution are osmotic pressure, depression in freezing point, elevation in boiling point and lowering in vapour pressure. Experimental values of colligative properties for electroetically because electrolytes dissociates to furnish more ions in solution. On the other hand experimentally obtained values of colligative properties for associating nature of solute ate lower than those obtained theoretically. The ratio of experimantal colligative properties to theoretical colligative properties is called as van't Hoff factor (i) . van't Hoff coefficient 'g' for 100% dissociated NaCl solution is:

True or false If observed value of the colligative property is more than the normal value of same property then Van't Hoff factor is more than one.