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Chapter 9: November 5, 2015 Aqueous Reactions 1. Some ionic compounds and molecular acids dissociate and ionize respectively in H2​ to form ions a. ionic compounds: solubility rules (see slide 9 from presentation) b. molecular acids: acid strength → strong acids 2. Precipitation Reactions: occurs when you take two solutions, mix them, and a solid is created; this solid is known as tprecipitate a. this solid must be insoluble in2​​ i. to determine this, go back to the solubility rules! 3. Ex: KI (aq) + Pb(NO​3​2 ​) ​ To see if this reaction is possible and determine products: a. Are the reactants soluble in 2​ ​Check the solubility rules, KI­yes, lead ni