Establish how Ka is related to the concentration of H3O+ and determine which among the hypohalous acids will be most acidic
Recall that Ka represents the dissociation of H3O+ when the weak acid reacts with water.
As an example, weak acid HA will react with water to form H3O+ ion:
HA (aq) + H2O (l) ⇋ A- (aq) + H3O+ (aq)
Acidity of the hypohalous oxyacids (YOH) as a function of electronegativity of Y.
At equilibrium, which of the two species with a halogen atom (green) is present in greater concentration?
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