Concept:Gasoline (petrol) is a mixture of various alkanes and hydrocarbons (e.g., octane, \( \text{C}_8\text{H}_{18} \)). Hydrocarbons are essentially non-polar molecules.
Formula:Not applicable.
Solution:- Because the electronegativity difference between Carbon and Hydrogen is negligible, hydrocarbon molecules have no permanent dipole moment.
- The only intermolecular forces capable of existing between non-polar molecules are momentary fluctuations in electron distribution.
- These temporary, induced dipoles are known as London dispersion forces.
Why other options are incorrect:Dipole-dipole and Hydrogen bonding require permanent polarity, which gasoline lacks. Dipole-induced dipole forces require a mixture of a polar and a non-polar substance.
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