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If 6gm of CH_(3)COOH is dissoved in benzene to make 1 litre at 300K. Osmotic pressure of solution is found to be 1.64 atm. If it is known that CH_(3)COOH in benzene forms a dimer. Calculate degree of association of acetic acid in benzene?

Answer»

SOLUTION :
`i=1+((1)/(n)-1)beta`
`1.64=0.0821xx300xx[1+((1)/(n)-1)beta]xx0.1`
`RARR 1.64=0.0821xx300[1-(beta)/(2)]0.1`
`(1.64)/(00.821xx30)=(2-beta)/(2)`
`(1.64)/(2.46)=(2-beta)/(2) 4=6.3beta`
`beta=(2)/(3)`


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