SHS General Chemistry 2 Lesson 2 PDF

MS. VIA NICOLE P. PRADO, LPT SHS Teacher DAILY ROUTINES Prayer Class Etiquette Class Attendance TOMAS CLAUDIO COLLEGES – SHS DEPARTMENT TODAY’S FOCI Overview of the subject Intramolecular Forces Intermolecular Forces TOMAS CLAUDIO COLLEGES – SHS DEPARTM...

MS. VIA NICOLE P. PRADO, LPT SHS Teacher DAILY ROUTINES Prayer Class Etiquette Class Attendance TOMAS CLAUDIO COLLEGES – SHS DEPARTMENT TODAY’S FOCI Overview of the subject Intramolecular Forces Intermolecular Forces TOMAS CLAUDIO COLLEGES – SHS DEPARTMENT OVERVIEW: 1. Intermolecular Forces and Liquids and Solids 2. Physical Properties of Solutions 3. Thermochemistry 4. Chemical Kinetics OVERVIEW: 1. Chemical Thermodynamics 2. Chemical Equilibrium 3. Acid-Base Equilibria and Salt Equilibria 4. Electrochemistry OBJECTIVES: 1. Differentiate Intramolecular and Intermolecular forces of Attraction 2. Describe and Differentiate the Types of Intermolecular forces 3. Determine the intermolecular forces of attraction that holds the molecule together TODAY’S FOCI Intramolecular Forces Intermolecular Forces TOMAS CLAUDIO COLLEGES – SHS DEPARTMENT  Intramolecular force – type of force at work within the two elements comibined Intermolecular force – type of force at work outside the two elements joining them with the other group of combined elements. STRENGTH OF INTERMOLECULAR FORCES STRONGEST ION-DIPOLE HYDROGEN BONDING DIPOLE-DIPOLE LONDON DISPERSION WEAKEST JOHANNES DIDERIK VAN DER WAALS Born on November 23, 137 in Leyden, The Netherlands. In his 1873 thesis, Van Der Waals noted the non-ideality of real gases and attributed it to the existence of intermolecular interactions. SUM UP! All polar molecules have partial negative end and partial positive end which are attracted to each other. Dipole-dipole forces are much weaker than ionic or covalent bond. SUM UP! The ion force exists in the attraction between an ion and a dipole molecule. An ion is a charged atom because it has gained or lost one or more electrons. It can be either positively charged cation and negatively charged anion. The partial charges at the ends of the dipole molecules make an ion-dipole interaction. SUM UP! The hydrogen bond is an attraction between a partial positive hydrogen in a polar molecule and a slightly negative atom in another molecule. SUM UP! The London dispersion force is the weakest intermermolecular force because it has only a temporary attractive force. Dispersion force exist when the electrons in two adjacent atoms attract and induce temporary dipoles. This forces is sometimes called induced- dipole-induced-dipole attraction. EXAMPLE: LONDON DIPOLE- HYDROGEN ION-DIPOLE DIPOLE BONDING N2 PCl3 CH3OH H2O (Nitrogen Gas) (Phosphorus (Methanol) (Water) trichloride) CH4 CO H2O(l) NaCl (Methane) (Carbon (Water) (Sodium Monoxide) Chloride) O2 SO2 HF NH3(aq) (Oxygen gas) (Sulfur dioxide) (Hydrogen (Ammonia fluoride) Solution) EXAMPLE: LONDON DIPOLE- HYDROGEN ION-DIPOLE DIPOLE BONDING KBr in H2O NaCl in H2O Fe in O2