1.

If K_1 & K_2 be first and second ionisation constant of H_3PO_4 and K_1 gtgt K_2 which is incorrect.

Answer»

`[H^(+)]=[H_(2)PO_(4)^(-)]`
`[H^(+)]=sqrt((K_(1)[H_(3)PO_(4)])`
`K_(2)=[HPO_(4)^(2-)]`
`[H^(3)]=3[PO_(4)^(3-)]`

ANSWER :A


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