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The Al (OH)(3) is involved in the follow...

The Al `(OH)_(3)` is involved in the following two equilibria,
`Al(OH)_(3)(s)hArrAl^(3+)(aq)+3OH^(-)(aq),K_(sp)`
`Al(OH)_(3)(s)+OH^(-)(aq.)hArrAl(OH)_(4)^(-)(aq),K_(c)`
Which of the following relationship is correct at which solubility is minimum?

A

`[OH^(-)]=((K_(sp))/K_(c))^(1//3)`

B

`[OH^(-)]=((K_(c))/(K_(sp)))^(1//4)`

C

`[OH^(-)]=sqrt(((K_(sp))/(K_(c)))^(1//4))`

D

None of these

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