Osmotic Pressure, The O.P. (Osmotic Pressure) of equimolar solution of Urea, BaCl 2 and

Osmotic Pressure

The O.P. (Osmotic Pressure) of equimolar solution of Urea, BaCl₂ and AlCl₃, will be in the order:
(a) AlCl₃ > BaCl₂ > Urea (b) BaCl₂ > AlCl₃ > Urea (c) Urea > BaCl₂ > AlCl₃ (d) BaCl₂ > Urea > AlCl₃

Answer: (a) The particle come of AlCl₃ solution will be maximum due to ionisation less in BaCl₂ and minimum in urea.

AlCl₃ → Al³⁺ + 3Cl^- = 4
BaCl2 → Ba²⁺ + 2Cl^- = 3

More the number of particles in solution more is the osmotic pressure a colligative properties.

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