The [H + ] of a solution with pH=2 is how many times different than the [H + ] of a solution with pH=3? 10 times greater. Remember that [H + ] of pH=2 is greater than pH=3. Also recall that pH is a log scale; every change in pH of 1x represents a change in [H + ] of 10x. 11.2, 11.7, 11.9 Give the Arrhenius definition of acids and bases. Acids release H + in solution. Bases release OH – in solution. Distinguish between dissociation and ionization. Give an example of each. Dissociation refers to the separation of ions (e.g. NaCl is an ionic solid. When dissolved in water its ions come apart). Ionization refers to the creation of ions where none existed before (e.g. HCl is not an ionic compound, yet it reacts with water to form ions: HCl + H 2 O → H 3 O + + Cl – ). Give the Bronsted definition of acids and bases. Acids are H + donors. Bases are H + acceptors. Bronsted definitions lead to what idea in acid-base equilibria? The idea of conjugate acid-base pairs (since if a H
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