KMT_page2 - Intermolecular Forces and Liquids and Solids 8...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Intermolecular Forces and Liquids and Solids 8 c:::=:: =v CHM12 Ion-induced dipole interaction EXERCISES: What type of IMF can be observed on the following molecules? c:::=::=vc:::=:: =v Dipole-induced dipole interaction 4.. Hydrogen Bond: a special type of dipole-dipole interaction between hydrogen atom in a polar bond and an electronegative atom (0, N, F) • For this to occur H should be attached to a small, highly electronegative molecule such as N, 0, F. •• •• •• H-OI'" H-OI'" H-OI I I H 5. 1. H IONS -7 ionic bonding Ion-dipole EEORDONO ~ WITH H bonded to O,F,N H bonding Strong IMF results to high surface tension. Water has a greater surface tension than most other liquids. Why? Molecules must break IMF in order to move to the surface and increase surface area. • • NON POLAR COMPOUNDS -7 London forces WITH IONS Explains why droplets are spherical. It is caused by IMF which is larger in the bulk of fluid than at the surface • FORCE OF ATTRACTION POLtR MOLECULES SURFACE TENSION: amount of energy required to stretch or increase the surface of a liquid by a unit area. • • < H-bonding < ion - dipole < ionic bonding SUMMARY OF INTERMOLECULAR C02 • • STRENGTHS OF IMF London < dipole-dipole 6. NH3 7. CH30H 8. CO 9. N2 10. HCI HF PROPERTIES OF LIQUIDS I H 1. 2. HBr 3. PF3 4. F2 • WITHOUT HYDROGEN dipole - dipole 2. What happens to surface tension if soap is added? Types of Capillary action: Cohesion and Adhesion. What is the difference betWeen the two? VISCOSITY: measure of a fluid's resistance to flow. • the greater the viscosity, the slower the liquid flows • • Viscosity decreases when temperature increases. Strong IMF results to higher viscosity. Page 2 ...
View Full Document

Ask a homework question - tutors are online