Question
Asked Jan 27, 2020
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Rank the following compounds in order of increasing strength of intermolecular forces: CH3CH2CH2CH2CH3 (pentane), CH3CH2CH2CH2OH (1-butanol), and CH3CH2CH2CHO (butanal).

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Expert Answer

Step 1

The forces which provide interaction including force of repulsion and attraction acting between the neighboring particles and molecules is known as intermolecular force.

Different types of intermolecular forces are known for example, London forces or dispersion forces, hydrogen bond, dipole-dipole forces, ion-dipole forces etc.

Step 2

Due to high electronegativity difference between hydrogen and oxygen the O-H bond becomes polar therefore, the strength of dipole dipole forces of attraction in butanol will be high.

In case of butanal the C=O bond is less polar due to less diffe...

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