CHEM 1AA3 Lecture Notes - Ammonium Chloride, Buffer Solution, Conjugate Acid
14 Feb 2014
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16-2, pg 664-667-note arrows go in wrong direction in text. + (aq) + oh( aq: acid = h+ donor, base = h+ acceptor, acid/base reactants & conjugate acid/base products, h2o is an amphoteric species (behaves as both an acid or a base) Which of the following is not a strong acid? (a) hno3 (b) hf (c) hcl (d) hbr (e) hi (f) hclo4 (g) h2so4 (strong acid: pka < 1) You should know 5 types of strong base. Which of the following is not a strong base? (a) group i hydroxides, alkoxides (e. g. , naoh, koh, Meo-na+ etc. ) (b) group ii hydroxides (e. g. , mg(oh)2, ca(oh)2, many are poorly soluble) (c) hydride, h( e. g. , kh) (d) oxides, o2-(e. g. , cao, li2o) (e) amines (e. g. , nh3) (strong base: pkb < 1) Concept check: (a) weak acids/bases undergo partial ionization in water; Strong acids/bases undergo ~ complete ionization in water (b) weak acids: Concept check: (c) extent of ionization described by ka or kb.
