JIPMER2012ChemistrySolutions
Which of the following would exert maximum osmotic pressure?
Options
- ADecinormal aluminium sulphate
- BDecinormal barium chloride
- CDecinormal sodium chloride
- DA solution obtained by mixing equal volumes of (2) and (3) and filtering
Correct answer
A. Decinormal aluminium sulphate
Step-by-step solution
Osmotic pressure is a colligative property, i.e., depends upon the number of particles of solute. Thus, the solution in which solute gives maximum number of ions, exerts maximum osmotic pressure. Number of particles, (1) In decinormal aluminium sulphate Al ₂ ( SO ₄ )₃ 2 Al ³⁺+3 SO ₄²⁻ _ 5 particles (2) In decinormal barium chloride, BaCl ₂ Ba ²⁺+2 Cl ⁻ _ 3 particles (3) In decinormal sodium chloride, NaCl Na ⁺+ Cl ⁻ _ 2 particles (4) When equal volumes of (2) and (3) are mixed, the concentration becomes half of pre