L4 Formulas Notes.pdf - 1 Lecture Slides Chapter 3 1 Chemical Formulas 2 A Simplified Approach to Chemical Structure • Conventions for Rxn Eqns

L4 Formulas Notes.pdf - 1 Lecture Slides Chapter 3 1...

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1 Lecture Slides Chapter 3 1 Chemical Formulas Conventions for Rxn Eqns & Formulas Molecular Representations Molecular vs. Ionic Compounds Formula/Mass Calculations 2 A Simplified Approach to Chemical Structure 2 kinds of elements 3 kinds of bonding 4 kinds of solids 3 Conventions for Reaction Equations & Chemical Formulas Aluminum and oxygen react to form aluminum oxide 2 Al (s) + 3 O 2 (g) Al 2 O 3 (s) T mp : 660 ° C –219 ° C 2072 ° C 4 Molecular Representations (of butane) Empirical Formula C 2 H 5 Molecular Formula C 4 H 10 Condensed Structural Formula CH 3 CH 2 CH 2 CH 3 Line Drawing Molecular Models
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2 Lecture Slides Chapter 3 5 N 2 O Na 2 O Elements/Bonding State @ 25C Atomic View Bond Analysis Nomenclature Molecular vs. Ionic 6 Ionic Compounds Formulas Ca & Br ? Li & O ? Melting Point Solubility in Water Bond Strength NaCl MgCl 2 MgO 7 Ionic Bond Strength Charge Size 2 2+ 1 1+ 2 2+ 1 1+ Stronger Bond MgO (mp 2800°C) NaF (mp 993°C) CsBr (mp 636°C) BaSe (mp 1850°C) 8 Nomenclature Inorganic Compounds CO CO 2 N 2 O 4 KCl K 2 O Potassium chloride Carbon monoxide
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Unformatted text preview: FeCl 2 FeCl 3 Mg(OH) 2 Carbon dioxide Dinitrogen tetroxide Potassium oxide Zinc nitrate Copper (II) phosphate Iron (II) chloride Iron (III) chloride Magnesium hydroxide Zn(NO 3 ) 2 Cu 3 (PO 4 ) 2 3 Lecture Slides Chapter 3 9 Nomenclature • Polyatomic Ions NO 3 – SO 4 2– ClO 3 – ClO 4 – Perchlorate Nitrate NO 2 – SO 3 2– ClO 2 – ClO – Sulfate Chlorate Hypochlorite Nitrite Sulfite Chlorite 10 Nomenclature • Organic Compounds CH 4 C 2 H 6 C 3 H 8 C 4 H 10 Butane Methane Ethane Propane • Acids HCl HNO 3 H 2 SO 4 HC 2 H 3 O 2 Acetic Hydrochloric Nitric Sulfuric 11 Formula / Mass Calculations Molar Mass of C 4 H 10 (butane) 12 Formula / Mass Calculations Mass % C and H in C 4 H 10 4 Lecture Slides Chapter 3 13 Formula / Mass Calculations Empirical Formula of compound w/ 84.12%C, 15.88%H 14 Formula / Mass Calculations Molecular Formula of previous if M = 114.2 g/mol...
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