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What Is the Hydronium Ion Concentration of a 0

Question 23

Multiple Choice

What is the hydronium ion concentration of a 0.150 M hypochlorous acid solution with Ka = 3.5 × 10-8? The equation for the dissociation of hypochlorous acid is:
HOCl(aq) + H2O(l) ⇌ H3O+(aq) + OCl-(aq)


A) 1.9 × 10-4 M
B) 7.2 × 10-4 M
C) 2.8 × 10-5 M
D) 7.2 × 10-5 M

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