Intermolecular Forces (Gaya Antarmolekul)
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The document discusses different types of intermolecular forces: 1. London dispersion forces, which are caused by instantaneous dipoles that form in all atoms and molecules and are strongest between large molecules. 2. Dipole-dipole forces, which exist between polar molecules that have partial positive and negative charges. 3. Hydrogen bonding, a strong form of dipole-dipole attraction that occurs when hydrogen is bonded to fluorine, oxygen, or nitrogen. 4. Ionic bonding is the electrostatic force between ions in ionic compounds. The strength of these different intermolecular forces, from strongest to weakest, is: covalent network > ionic >
Intermolecular Forces (Gaya Antarmolekul)
- 1. Intermolecular forces 13-Nov-12 1
- 2. Overview intramolecular bonds attraction in molecules intermolecular forces 13-Nov-12 2
- 3. Intermolecular forces is much weaker than intramolecular forces 13-Nov-12 KARBOHIDRAT 3
- 4. INTERMOLECULAR FORCES ---- attraction that exist between molecule 1. GAYA VAN DER WAALS GAYA DIPOLE-DIPOLE GAYA LONDON (DISPERSI) 2. IKATAN HIDROGEN 13-Nov-12 4
- 5. 1. Gaya dipole-dipole....dipole-dipole force 2. Gaya london (dispersi)....dispersion force 4. Ikatan hidrogen......hydrogen bonding 5. Ikatan ionik....ionic bonding 6. Jaringan ikatan kovalen.....covalent network 13-Nov-12 5
- 6. What should be discussed : 1. What ? 2. When? 3. Example? 4. Power? 13-Nov-12 6
- 7. London dispersion force The attraction between atoms and molecules caused by the formation of instantaneous atoms in the atoms and molecules Two non polar molecule Caused by momentary dipole 13-Nov-12 7
- 8. 13-Nov-12 KARBOHIDRAT 8
- 9. 13-Nov-12 KARBOHIDRAT 9
- 10. polarizability the ease with which an atom or molecule can be distorted to have an instantaneous dipole. 13-Nov-12 KARBOHIDRAT 10
- 11. Polarizability increases with: greater number of electrons Dispersion forces usually increase with molar mass. 13-Nov-12 KARBOHIDRAT 11
- 12. Effects on boiling points 13-Nov-12 12
- 13. Dipole-dipole force The force that exist between negative and positive ends of a polar molecule. Between two polar molecule + - + - Opposite attraction 13-Nov-12 13
- 14. 13-Nov-12 KARBOHIDRAT 14
- 15. Hydrogen bonding A form of dipole attraction in which hydrogen atom bonded to a strongly electronegative atom H + F, O, N .... HF, NH3, H2O Works like dipole-dipole but 5 times stronger 13-Nov-12 KARBOHIDRAT 15
- 16. Ionic bonding The forces holding ions together in ionic solids are electrostatic forces 13-Nov-12 KARBOHIDRAT 16
- 17. 100 % covalent bond There are no intermolecular force Only compounds of C only (diamond, graphite) and Si (usually with Oxygen) very strong attraction 13-Nov-12 KARBOHIDRAT 17
- 18. 13-Nov-12 KARBOHIDRAT 18
- 19. 13-Nov-12 KARBOHIDRAT 19
- 20. power Jaringan ikatan kovalen > Ikatan ionik > Ikatan hidrogen > dipol-dipol > gaya london 13-Nov-12 20