CHM 1025 C Chap 7 Worksheet Binary Ionic / Type 1 Compounds Are compounds that usually contain a main group metal. Maingroup metals usually form one cation except Pb and Sn Naming of ions according to IUPAC Name the cation for the parent metal. Name the anion by using the nonmetal stem plus the suffix ide Cation Anion Formula of compound Name of compound Na + Cl sodium ion chloride ion NaCl Sodium chloride Ca 2+ S calcium ion sulfide ion Li + N 3 lithium ion nitride ion Ba 2+ I barium ion iodide ion Al 3 O Aluminum ion oxide ion Aluminum oxide Ag + O Silver ion oxide ion Silver oxide Zn 2+ Br Zinc ion bromide ion Note: Silver and Zn are transition elements but make only one charge Therefore they make Type 1 compounds Mg 2+ P 3 Magnesium ion phosphide ion Ga 3+ Se Gallium ion selenium ion Gallium selenide K + O Potassium ion oxide ion Binary Ionic/ Type 2 Compounds 1
Compounds that usually contain a transition metal. Transition metals often form more than one cation. Type 2 ion Stock name Latin name Cu + copper (I) ion cuprous ion Cu 2+ copper (II) ion cupric ion Fe 2+ iron(ii)ion ferrous ion Fe 3+ iron(iii)ion ferric ion Co 2+ cobalt(ii)ion cobaltous ion Co 3+ cobalt(iii)ion cobaltic ion Pb 2+ Lead (II)ion plumbous ion Pb 4+ Lead(IV)ion plumbic ion Name the following Type 2 compounds in both the stock and the Latin systems. Stock system Latin system Charge of metal CuO Cu 2 O Fe 2 S 3 +3 FeS Co 2 O 3 PbBr 2 PbO PbO 2 Plumbic oxide Lead(IV)oxide + 4 Note. Although lead is not a transition element it shows more than one charge. 2
Binary molecular compounds (Type III compounds) Binary molecular compounds are composed of usually two nonmetal elements. The order in which the elements are written in the chemical formula is set by the IUPAC and follows as :C,P,N,H,S,I,Br,Cl,O,F. Rules of naming. 1. The first element in the formula is named first. Use the full element name. 2. The second element is named as though it were an anion: Ends with the suffix ide 3. Prefixes are used to denote the number of atoms present. 4. The prefix mono is always omitted unless its presence is necessary to avoid confusion. Exceptions are CO and NO Greek Prefixes for Binary Molecular Compounds Atoms Prefix Atoms Prefix 1 mono 6 hexa 2 di 7 hepta 3 tri 8 octa 4 tetra 9 nona 5 penta 10 deca Name the following Binary molecular Compounds. SO 2 SO 3 sulfur trioxide NO nitrogen monoxide NO 2 CO CO 2 carbon dioxide Cl 2 O 7 P 2 O 5 diphosphorus pentaoxide Write down the formulas for the names of following binary molecular compounds Carbon tetrachloride Hydrogen chloride Tetraphosphorus decasulfide Xenon hexafluoride Dihydrogen oxide Nitrogen trihydride 3
Binary Acids A Binary acid is an aqueous solution of a compound containing hydrogen and a nonmetal. A binary acid is produced by dissolving a binary molecular compound in water. Rules of naming. 1. The acid is named with the prefix hydro 2. Attach the suffix ic to the root name for the element 3. Add the word acid at the end of the name. Name the following binary molecular compounds. Note : aq stands for aqua (means water). HF (aq) HCl (aq) HBr (aq) HI (aq) H 2 S (aq) H 2 Te (aq) H 2 Se (aq) Hydrofluoric acid Hydroiodic acid Hydrotelluric acid Hydroselenic acid 4
Ternary Ionic Compouds Compounds containing a metal and usually two other elements are classified as ternary ionic compounds. Ternary ionic compounds have a monoatomic metal cation and a polyatomic oxyanion. Polyatomic ions Note: There is no simple systematic way of naming the polyatomic ions. Use flash cards to memorize the formulas, names and the charges of most common ones listed in the table below. OH Hydroxide ion NH 4 + _Ammonium ion _ SO 3 Sulfite ion SO 4 _Sulfate ion NO 2 Nitrite ion NO 3 Nitrate ion C 2 H 3 O / CH 3 CO 2 _Acetate ion MnO 4 _Permanganate ion PO 4 3 Phosphate ion CO 3 _Carbonate ion HCO 3 Hydrogen carbonate ion_ C 2 O 4 oxalate ion CrO 4 Chromate ion Cr 2 O 7 dichromate ion Give the formula of the following ternary ionic compounds. Sodium hydroxide Calcium carbonate Gallium sulfite Lithium nitrite Calcium oxalate Aluminum hydroxide 5
Potassium hydrogen carbonate Magnesium acetate Indium nitrate _ Potassium permanganate Barium phosphate Aluminum acetate Ammonium sulfate Ammonium hydroxide Ternary Compounds containing Type 2 metals Write down the formula of the following compounds Copper (II)sulfate Iron (III) nitrate Iron (III)carbonate Copper (II)phosphate Cobalt (II)nitrite Lead(II)nitrate Provide the names for the formulas of the following compounds. Pb SO 4 Co 2 (C 2 O 4 ) 3 Fe 3 (PO 4 ) 2 6
Ternary Oxyacids A ternary oxyacid is an aqueous solution of a compound containing hydrogen and an oxyanion. ite anions make ous acids & ate anions make ic acids. H 2 SO 3 H 2 SO 4 HNO 2 HNO 3 H 3 PO 4 H 2 CO 3 H 2 C 2 O 4 Common Organic acid H 4 C 2 O 2 / CH 3 CO 2 H Acetic acid Hydrates Copper (II)sulfate pentahydrate _ Sodium carbonate decahydrate NiCl 2.6H 2 O MgSO 4.7H 2 O Na 2 CO 3.10 H 2 O 7