What is the equation for the dissociation of the weak acid HBrO4 in water.

Answer 1

HBrO_{4 (aq)} + H₂O_(l) <—> Bro₄^-_(aq) + H₃O⁺_(aq)

HBrO_{4 (aq)} competes with water for the H⁺ ion. Since it is a weak acid, there is not complete dissociation and hence why we use the double arrow.