Nitrous acid is a weak acid and partially dissociates in water. HNO₂(aq) + H₂O(1) H3O+ (aq) + NO₂ (aq) K = 4.5 x 10-4 @ 25°C A solution is composed of 0.50 M HNO2. Calculate the equilibrium concentrations of the components. What is the equilibrium concentration of NO2-? [NO₂] = [?] x 10 M Exponent (yellow) Coefficient (green) Enter

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