Question detail
How does the viscosity of hydrocarbons change as the molecular size increases?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Carbon compounds as fuels and feedstock
Question
How does the viscosity of hydrocarbons change as the molecular size increases?
Answer
As the molecular size of hydrocarbons increases, their viscosity also increases. This is because larger molecules have more surface area, leading to greater intermolecular forces that make it harder for the molecules to flow.
Explanation
This question tests the understanding of the relationship between molecular size and viscosity in hydrocarbons. A strong answer demonstrates knowledge of how molecular structure affects physical properties.
Common mistake
Viscosity Misconception
Students think viscosity decreases as hydrocarbon chain length increases, assuming longer chains flow more easily.
Explain that longer hydrocarbon molecules have more surface area and stronger London dispersion forces, so viscosity increases with chain length.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.