The osmotic pressure of which solution is maximum ( consider that deci-molar solution of each 90% dissociated )

Options

A. Aluminium sulphate
B. Barium chloride
C. Sodium sulphate
D. A mixture of equal volumes of (b) and (c)

Answer

A

Explanation

`Al_(2)(SO_(4))_(3)` gives maximum osmotic pressure because it gives 5 ions.
`Al_(2)(SO_(4))_(3)iff2Al^(3+)+3SO_(4)^(2-)`.