a) Dimethyl ether is polar.
b) Ethanol has covalent intramolecular bonds.
c) Dimethyl ether forms hydrogen bonds.
d) Dimethyl ether has dispersion intermolecular forces.
e) Dimethyl ether has ionic intramolecular attractions.
f) Ethanol is polar.
g) Ethanol has dispersion intermolecular forces.
h) Ethanol is a carboxylic acid.
1 Answer
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True/false….
a) Dimethyl ether is polar….. FALSE ….. The molecule is symmetrical.
*** Instead, dimethyl is indeed polar. The dipole moment is greater than I anticipated (1.30D). So, while the molecule is symmetrical in terms of the two methyl groups, it is bent at the oxygen and has a net dipole moment. — Thanks, hcbiochem.
b) Ethanol has covalent intramolecular bonds….. TRUE
c) Dimethyl ether forms hydrogen bonds…..FALSE (Sort-of) ….. The oxygen can be a hydrogen bond acceptor from a molecule which has hydrogen and is capable of hydrogen bonding. Dimethyl ether cannot form hydrogen bonds with other dimethyl ether molecules.
d) Dimethyl ether has dispersion intermolecular forces…..TRUE …. ALL molecules exhibit London dispersion forces.
e) Dimethyl ether has ionic intramolecular attractions….. FALSE …. nonsense
f) Ethanol is polar. …. True…. It is asymmetrical
g) Ethanol has dispersion intermolecular forces…..TRUE …. ALL molecules exhibit London dispersion forces.
h) Ethanol is a carboxylic acid……FALSE….. Ethanol does not have the -COOH group.
