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The equilibrium concentrations of the reactants and products are [HA] = 0.150 M [H ] =...

The equilibrium concentrations of the reactants and products are [HA] = 0.150 M [H ] = 2.00 × 10–4 M [A–] = 2.00 × 10–4 M Calculate the value of pKa for the acid HA.
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