A monoprotic weak acid, HAHA, dissociates in water according to the reaction HA(aq)+H2O(l)−⇀↽−H3O+(aq)+A−(aq) The equilibrium concentrations of the reactants and products are [HA]=0.150 M, [H3O+]=4.00×10−4 M, and [A−]=4.00×10−4 M. Calculate the Ka value for the acid HA.
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A monoprotic weak acid, HAHA, dissociates in water according to the reaction
HA(aq)+H2O(l)−⇀↽−H3O+(aq)+A−(aq)
The equilibrium concentrations of the reactants and products are [HA]=0.150 M, [H3O+]=4.00×10−4 M, and [A−]=4.00×10−4 M. Calculate the Ka value for the acid HA.
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