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Aqueous Solutions. Some solutes exist as molecules when dissolved in water (sugar, ethanol) Many solutes dissociate or form ions in water Acids form H + ions; bases form OH - ions so mixing an acid and base will produce a salt and water. Double Replacement Rxns.
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Aqueous Solutions • Some solutes exist as molecules when dissolved in water (sugar, ethanol) • Many solutes dissociate or form ions in water • Acids form H+ ions; bases form OH - ions so mixing an acid and base will produce a salt and water
Double Replacement Rxns • Involve solutions (aq) with a salt dissolved in water. • Both reactants will be aqueous and one product will be aqueous • Other product will be a precipitate (solid), water (liquid) or gas • The product that remains aqueous really hasn’t reacted or changed, so we can simplify the equation
Ionic Equations • Substances that are ions in the equation are written as ions (not compounds) • Complete ionic equation = shows all of the ions involved • Net ionic equation = shows only the ions that “participate” in the reaction • Spectator ions = ions that don’t participate in reaction (show up on both sides)
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