CHEM101 Lecture Notes - Lecture 9: Ionic Compound, Infrared, Joule

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CHEM101 Full Course Notes
77
CHEM101 Full Course Notes
Verified Note
77 documents

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Introductory university chemistry i (chem 101 / 103) Two types of molecular forces: the intramolecular forces are the bonding forces exist within a molecule which influence the chemical properties of the substance. It is relatively strong when compared with intermolecular forces. (about 150 1100 kj / mol for covalent bonds: the intermolecular forces are forces between molecules / ions. It is relatively weak. (usually about 0. 05 40 kj / mol) It accounts for physical properties of matters (solid, liquid and gas) Ion- ion force (ionic bonding: covalent force (covalent bonding, metallic force (metallic bonding) Effect of intermolecular forces on compounds (physical properties): This is the attraction between an ion and a nearby polar molecule. The most common example of this type of intermolecular force takes place when an ionic compound dissolves in water. Usually, six water molecules surround an ion in ion-dipole interaction. The strength of the ion-dipole force depends on three factors: