Question

between 0.1 m na3po4 and 0.1 m cacl2 which has lower osmotic pressure​

Answer 1

Answer:

Correct option is

A

Explanation:

NaCl

Colligative properties : Those physical properties of a solution which depend upon the number of particles in a given volume of the solution or the mole fraction of the solute are called colligative properties.  

The following four properties are colligative properties : (i)Lowering of vapour pressure of the solvent. (ii)Elevation in boiling point of the solvent. (iii)Depression in freezing point of solvent. (iv)Osmotic pressure.

As no of ions increases, lowering of VP increases,

here,

NaCl = 2 ion

CaCl  

2

​

  = 3 ion  

and Al  

2

​

(SO  

4

​

)  

3

​

 = 5 ions so

NaCl will give highest VP.