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

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periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

i'm wiling to try and you : )