Acids and Bases Naming pH Strength Arrhenius Bronsted-Lowry Lewis

Properties of Acids and Bases Acids – Tart or sour taste – Red on litmus indicator Bases – Bitter taste – Feels slippery – Blue on litmus indicator

Naming Acids HX – H indicates Hydrogen – X indicates monatomic or polyatomic anion – Must be dissolved in water to be named as an acid Three Rules: 1.If anion ends in –ide: a)Acid name begins with hydro- b)-ide becomes –ic 2.If anion ends in –ite: a)-ite becomes –ous followed by the word acid 3.If anion ends in –ate: a)–ate becomes –ic followed by the word acid

Bases – The Hydroxide Ion Just like we would normally name an ion. – Cation name plus the name of the anion – In this case, the anion is hydroxide (OH - ) Example: Lithium hydroxide = LiOH Strontium hydroxide = Sr(OH) 2

Example 1 (pg. 538) A.HClO -ClO is the hypochlorite ion, so –ite becomes –ous… Therefore hypochorous acid B.HCN -CN is the cyanide ion, so we must use hydro- and – ide becomes –ic … Therefore hydrocyanic acid C.H 3 PO 4 -PO 4 is the phosphate ion, so –ate becomes –ic… Therefore phosporic acid

Concept Practice 2. Name these acids and bases a. HF hydrofluoric acid b. H 3 PO 4 Phosphoric acid c. KOH potassium hydroxide d. H 2 SO 4 Sulfuric acid e. HNO 2 nitrous acid f. Mg(OH) 2 Magnesium hydroxide

Practice Problem 3. Write the formulas for the following acids and bases: a. Chromic acid H 2 CrO 4 b. Iron (II) hydroxide Fe(OH) 2 c. Hydroiodic acid HI d. Lithium hydroxide LiOH e. Chlorous acid HClO 2

Unit Assignment Pg. 565; Pg. 566; 42-45, 47, 49-50, 55-56, #65 Do pg. 565; 32 & 33 today (5/6)