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CHE 107 ch. 15
exam material
Question | Answer |
---|---|
Acids | sour taste can dissolve many metals neutralize bases |
bases | bitter slippery neutralize acids |
Arrhenius acid and base | Bronsted-Lowry difinition is broader conjugate acid-base pairs differ by a single H+ |
Water is | amphoteric |
at 25 celcius, Kw = | 1.0 x 10-14 Kw=[H+][OH-] |
pH=-log[H+] pOH=-log[OH-] | pH+pOH=14 |
percent ionization of weak acids | %ionization=[H3O+]equil/[HA]initial *100 |
strong and weak acids | strong acid completely dissociates high concentration of H+ -equilibrium of weak acid dissociation is diriven to the left (HA formation) due of Le Chatelier's priciple |
mixture of weak acids | multiple reactions -find the storongest of the acids (highest Ka value) -do the Ka calculation as if it was the only acid |