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A solution required [OH^(-)]=2M. If degr...

A solution required `[OH^(-)]=2M`. If degree of dissociation of `Mg(OH)_(2)` is `alpha`, what analytical molarity solution of `Mg(OH)_(2)` is

A

`alpha`

B

`2 alpha`

C

`(1)/(2alpha)`

D

`(1)/(alpha)`

Text Solution

Verified by Experts

The correct Answer is:
D
`[OH^(-)]=2M`
`{:(Mg(OH)_(2)hArr,Mg^(2+)+,2OH^(-),,),(C,0,0,,),(C(1-alpha),Calpha,2Calpha,,):}`
`:. 2 Calpha=2M`
`:. C=(2)/(2 alpha)=(1)/(alpha)`
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