Essential Chemistry for IGCSE - Organic Chemistry And Petrochemicals (Section 2 - No. 18)
Which of the following best describes the trend of viscosity as the number of carbon atoms increases in a homologous series of alkanes?
Viscosity decreases.
Viscosity increases.
Viscosity remains constant.
Viscosity fluctuates randomly.
Explanation
As the carbon chain gets longer (more carbon atoms), the intermolecular forces increase, leading to higher viscosity.
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