Arrange the compounds in order from highest to lowest boiling point. Consider how noncovalent interactions would affect the boiling point rather than looking up actual boiling points. Highest boiling point propane сс. isopropanol dichloromethane (CH,CI,) 1-butene Lowest boiling point Answer Bank Identify the three true statements. Stronger intermolecular forces usually correlate with higher boiling points. Boiling point generally increases with molecular weight due to increased strength of dispersion forces. Hydrocarbons exhibit only dispersion forces. Dipolo-dipole interactions are stronger than dispersion forces and hydrogen bonds. Hydrogen bonds require carbon, hydrogen, and a halogen.

For the arrangement of compounds above, isopropanol has the highest boiling point because it forms hydrogen bonds with water. Dichloromethane possess dipole-dipole interaction which accounts for its higher boiling point. 1-butene has a higher boiling point than propane because it has higher molecular mass thus greater dispersion forces.

throwdolbeau throwdolbeau · Answer 2 · 2022-02-16T07:12:40+01:00

The order of compounds from highest to lowest boiling point is:

Isopropanol>dichloromethane>1-butene>propane

Intermolecular attraction:

The forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ).

The order of attraction is as follows:

Ionic bonds > Hydrogen bonding > Van der Waals dipole-dipole interactions > Van der Waals dispersion forces.

Stronger intermolecular forces usually correlate with higher boiling points. Boiling points generally increases with molecular weight due to increased strength of dispersion forces.

In the given compounds, isopropanol has the highest boiling point because it forms hydrogen bonds with water. Dichloromethane possess dipole-dipole interaction which accounts for its higher boiling point. 1-butene has a higher boiling point than propane because it has higher molecular mass thus greater dispersion forces.

Thus, the order of decreasing boiling point will be:

Isopropanol>dichloromethane>1-butene>propane

Find more information about Intermolecular attraction here:

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