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If K(a1) , K(a2)andK(a3) be the first, s...

If `K_(a1) , K_(a2)`and`K_(a3)` be the first, second and third ionization constant of `H_3PO_4` and `K_(a1) ≫ K_(a2) ≫ K_(a3)`. Then which is/are correct ?

A

`[H^+]=sqrt(K_(a_1)[H_3PO_4]`

B

`[H^+]=[HPO_4^(2-)]`

C

`K_(a2)=[HPO_4^(2-)]`

D

`[HPO_4^(2-)]=[PO_4^(3-)]`

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The correct Answer is:
A, C
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