Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Which of the following alkanes has the highest boiling point?
2-methylpentane
O 2,3-dimethylbutane
hexane
3-methylpentane
Expert Solution
Step 1
Boiling point of any molecule depends on 2 things ( in the same priority order as they are mentioned)
1) The strength of inter-molecular forces between the molecules.
2) Molar mass or surface area of the molecules.
Since stronger is the inter-molecular forces between the molecules, more will be the energy required to break the inter-molecular forces.
Hence more will be the boiling point of the molecule.
Similarly more is the mass of the compound, more will be the energy required to boil.
Hence more will be the boiling point of the compound.
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