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Explain the differences in boiling point of a 1-pentene (bp 30°c), 1-bromopentane (bp 129°c) and 1-pentanol (bp 137°c). what intermolecular forces are involved in holding the molecules in the liquid form in each of these as pure substances?

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ChemistryHelper2024
Generally bonds present between molecules are called intermolecular forces. they are three types:
1) Wander Wall forces (London forces)
2) Dipole - dipole interaction.
3) Hydrogen bond.
- As molecular weight increases boiling point also increases due to surface are is directly proportional to Wander Waal forces.
- Dipole-dipole attraction: the attraction between two different polarizable molecules is called dipole- dipole attraction, this attraction play important role in boiling point.
- Hydrogen bond: electrostatic attraction between hydrogen and more electronegative atom is called hydrogen bond.
- The substance which has hydrogen bond have higher boiling point.
1-pentanol has hydrogen bond
1- Bromopentane has dipole - dipole
1-pentene has only London forces
Hydrogen bond > dipole - dipole attraction > London force 
mickymike92

The difference in the boiling point of a 1-pentene (bp 30°c), 1-bromopentane (bp 129°c) and 1-pentanol (bp 137°c) is due to the presence of additional bonds in 1-bromopenrane and 1-pentanol.

The intermolecular forces present are dipole-dipole interactions and hydrogen bonding.

Why are there differences in boiling point of a 1-pentene (bp 30°c), 1-bromopentane (bp 129°c) and 1-pentanol (bp 137°c)?

The boiling point of a substance depends on the strength and number of bonds present in the moleculesof that substance.

The differences in boiling point of a 1-pentene, 1-bromopentane and 1-pentanol is that

  • in addition to the Van der waals forces present in each substance, 1-bromopentane and 1-pentanol has additional intermolecular forces between their molecules.

Some of the intermolecular forces include:

  • Dipole - dipole interaction in 1-bromopentane and 1-pentanol
  • Hydrogen bonding in 1-pentanol

Since hydrogen bond > dipole - dipole attraction > London force, 1-pentanol has the highest boiling point.

Learn more about about intermolecular forces at: https://brainly.com/question/13588164

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