We’re being asked to identify the intermolecular forces present in CH3CH2OH.
Recall that there are several types of intermolecular forces:
1. Ion-dipole interaction – occurs between an ion and a polar covalent compound
2. Hydrogen bonding – occurs in compounds where hydrogen is directly connected to an electronegative element such as N, O, or F
3. Dipole-dipole interaction – occurs between two polar covalent compounds
4. Induced-dipole interaction – occurs when a nonpolar compound interacts with a polar compound
5. Dispersion forces – occurs in all compounds. This is the primary intermolecular force exhibited by nonpolar compounds.
For this problem, we need to do the following steps:
Step 1: Calculate the total number of valence electrons present.
Step 2: Draw the Lewis structure for the molecule.
Step 3. Determine the polarity and IMF of the molecule.
The strongest intermolecular interactions between ethyl alcohol (CH3CH2OH) molecules in the liquid arise from
A) dipole-dipole forces.
B) dispersion forces.
C) hydrogen bonding.
D) ion-dipole interactions.
E) carbon-oxygen bonds.
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