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) rarr 2Al^(+++) +3SO_(4)^(--) ` ( 5 particles )
`BaCl_(2) rarr Ba^(++) +2Cl^(-) ` ( 3 particles )
`Na_(2) SO(4) rarr 2Na^(+) +SO_(4)^(--) ` ( 3 particles )
A mixture of equal volumes.