Question

19. Least osmotic pressure is of
AT) 0.1 M Hg, C12
C
(2) 0.1 M Ca3(PO4)2
(3) 0.1 M K [Fe(CN)6]
(4) 0.1 M AICI​

Answer 1

Answer:

(2) 0.1 M Ca3(PO4)2

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Answer 2

Answer:

here is your answer bro

Explanation:

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

CaCl2​  = 3 ion

and Al2​(SO4​)3​ = 5 ions so

NaCl will give highest VP.