1.

The number of steps, in which orthophosphoric acid is ionised, areA. 3B. 1C. 4D. 2

Answer» Correct Answer - A
As it is a tribasic acid.
`H_(3)PO_(4)hArr H^(+)+H_(2)PO_(4)^(-)hArr H^(+)+HPO_(4_^(2-)hArrH^(+)+PO_(4)^(3-)` Number of steps =3


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