Which Compound Has Highest Boiling Point?

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SUMMARY

The compound with the highest boiling point among the options CH3—CH3, CH3—CH2OH, CH3—COOH, CH3—COH, and H2S is CH3—COOH (acetic acid). This conclusion is based on the polarity and hydrogen bonding capabilities of the compounds. While CH3—COOH exhibits strong hydrogen bonding due to its carboxylic acid group, H2S is a gas at standard temperature and pressure (STP), confirming it cannot have a higher boiling point than the others. The confusion in the discussion arose from conflicting interpretations of the boiling points, but reliable sources such as Wikipedia confirm CH3—COOH as the correct answer.

PREREQUISITES
  • Understanding of molecular polarity
  • Knowledge of hydrogen bonding
  • Familiarity with boiling point concepts
  • Basic chemistry terminology related to functional groups
NEXT STEPS
  • Research the boiling points of various functional groups in organic chemistry
  • Learn about the effects of molecular structure on boiling points
  • Explore the concept of hydrogen bonding in detail
  • Investigate the physical states of compounds at standard temperature and pressure (STP)
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Chemistry students, educators, and anyone interested in understanding the factors affecting boiling points of organic compounds.

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Homework Statement


Of the following compounds, which has the highest boiling point?
  1. (A) CH3—CH3
  2. (B) CH3—CH2OH
  3. (C) CH3—COOH
  4. (D) CH3—COH
  5. (E) H2S

Homework Equations


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The Attempt at a Solution


Chose C because is more polar with the 2 oxygens, however, the answer has conflicting answer. It says its E while explaining why its C. Can someone confirm which one is right? Thanks!
 
Physics news on Phys.org
You've got it; now "Google" it for confirmation.
 
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Ah yes, totally forgot that wikipedia had boiling points, thanks!
 
TT0 said:
It says its E

So obviously wrong, H2S is a gas at STP.
 
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