The pH of a 0.55 M aqueous solution of hypobromous acid, HBrO, at 25.0°C is 4.48. What is the value of K_a for HBrO?

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Quizplus · Accepted Answer

The pH of a solution is given by the equation pH = -log[H+]. The concentration of H+ ions in a solution can be calculated using the dissociation constant, Ka, which is a measure of the strength of the acid. The Ka for HBrO is given by the equation Ka = [H+][BrO-]/[HBrO]. Substituting the given values into this equation, we get Ka = (10^-4.48)^2/0.55 = 2.0 × 10^-9.

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