M4 Alkanes Q&A
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Explain how the boiling point changes down the alkane homologous series. or example: explain the trend shown
• The longer the carbon chain the higher the boiling point • Longer chains have more points of (surface) contact • More induced dipole-dipole interactions between molecules • More energy is needed to break the intermolecular forces
Explain the effect of branching on the boiling point of the alkanes. or example: explain the trend shown
• The more branched the alkane, the lower the boiling point • More branched chains have shorter chain length and fewer points of (surface) contact • Fewer induced dipole-dipole interactions between molecules • Less energy is needed to break the intermolecular forces