AP Chemistry Question 363: Answer and Explanation

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Question: 363

3.

CompoundFormulaNormal Boiling Point, K
n-heptaneC7H16371
n-octaneC8H18398
n-nonaneC9H20424
n-decaneC10H22447

Based on the data in the table above, which of the following substances has lowest viscosity?

  • A. n-heptane
  • B. n-octane
  • C. n-nonane
  • D. n-decane

Correct Answer: A

Explanation:

(A) The lowest boiling point points to the lowest attractive forces and thus the lowest viscosity.