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What will be the degree of dissociation ...

What will be the degree of dissociation of 0.1 M `Mg(NO_3)_2` solution if van't Hoff factor is 2.74 ?

A

`75%`

B

`87%`

C

`100%`

D

`92%`

Text Solution

Verified by Experts

The correct Answer is:
B
`Mg(NO_3)_2 to Mg^(2+) + 2NO_3^-`
`alpha=(i-1)/(n-1)=(2.74-1)/(3-1)=1.74/2=0.87`
Degree of dissociation = 0.87 x 100 = 87%
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