What will be the osmotic pressure of 0.03N solution of Aluminium sulphate solution at `27^(@)`C ? If in solution salt dissociates 90%

Options

A. 0.566 atm
B. 0.677 atm
C. 3.399 atm
D. 4.069 atm

Answer

A

Explanation

`Al_(2)(SO_(4))_(3)`
`i=5 :.alpha=(i=1)/(n-1)`
`0.9=(alpha-1)/(5-1)`
`alpha=3.6+1=4.6`
`pi=I CRT`
`4.6xx((0.03)/(6)M)R(298)`
=0.566 atm