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Consider the equilibrium reactions, H...

Consider the equilibrium reactions,
`H_(3)PO_(4)overset(K_(1))(hArr ) H^(+)+H_(2)PO_(4)^(-)`
`H_(2)PO_(4)^(-)overset(K_(2))(hArr ) H^(+)+HPO_(4)^(-2)`
`HPO_(4)^(-2)overset(K_(3))(hArr)H^(+)+PO_(4)^(-3)`
The equilibrium constant `K` for the following dissociation
`H_(3)PO_(4)hArr 3H^(+)+PO_(4)^(-)` is

A

`K_(1) // K_(2)K_(3)`

B

`K_(1) K_(2) K_(3)`

C

`K_(2) // K_(1)K_(3)`

D

`K_(1)+K_(2)+K_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
In multistage equilibrium ,
`K=K_(1). K_(2).K_(3)`
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