Question

Consider the equilibrium reactions,
`H_(3)PO_(4)overset(K_(1))(hArr ) H^(+)+H_(2)PO_(4)^(-)`
`H_(3)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)`

Answer 1

Correct Answer - B
In multistage equilibrium ,
`K=K_(1). K_(2).K_(3)`