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A 0.004M solution of Na(2)SO(4) is isoto...

A `0.004M` solution of `Na_(2)SO_(4)` is isotonic with a `0.010 M` solution of glucose at same temperature. The apparent degree of dissociation of `Na_(2)SO_(4)` is

A

`25%`

B

`50%`

C

`75%`

D

`85%`

Text Solution

Verified by Experts

The correct Answer is:
C
`(pi_(obs)Na_(2)SO_(4)=pi_("glucose")` or `(10)/(4)=(1+2alpha)/(1)` or `10=4+8alpha`
`alpha=(10-4)/(8)=0.75 % "of" alpha=75%`
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