Sep 19, 2013 · Intermolecular forces exist between independent particles, such as atoms, ions, or molecules. They can be forces of either attraction or repulsion. The amount of charge, how it is distributed, and the length of time that a charge distribution exists can affect the strength of intermolecular forces.
There are five types of Intermolecular forces 1. Ion-dipole forces 2. Ion-induced dipole forces 3. Dipole-dipole forces (Hydrogen bond is also a special type of dipole-dipole forces) 4. Dipole-induced dipole forces 5. London dispersion forces Vapor pressure: When a liquid evaporates, the molecules that enter the vapor phase
For example, we can conclude that, amongst the hydrides considered here, the intermolecular interactions are greatest between H 2 O molecules and weakest between CH 4 molecules. We examine the three trends in this figure, described above, in light of the strength of intermolecular forces.
•Intermolecular forces of attraction only exist in solid and liquid states for that substance. •Intermolecular forces – forces of attraction between molecules that hold molecules together. The stronger the intermolecular forces the higher the melting or boiling points •Three types of intermolecular forces: 1.
2)Of the following substances, only _____ has London dispersion forces as its only intermolecular force. CH3OH NH3 H2S CH4 HCl A)NH3 B)H2S C)CH3OH D)HCl E)CH4 2) 3)Of the following substances, only _____ has London dispersion forces as the only intermolecular force. CH3OH NH3 H2S Kr HCl A)Kr B)CH3OH C)HCl D)NH3 E)H2S 3) 1
Intermolecular Forces, Ionic bond strength, Phase Diagrams, Heating Curves. Extra Practice Problems. 1. Rank the ionic bond strength for the following ionic formulas, 1 being strongest 4. Arrange the following compounds in order of increasing attraction between their ions: MgO.
To identify intermolecular forces, it is useful to classify the species being considered as (1) non-polar molecules, (2) polar molecules and (3) ions. Keep in mind that dispersion forces exist between all species. Due to the large electronegativity difference between hydrogen and bromine/sulphur, the...