Boiling Point Q: Is Alcohol Higher Than Ammonia?

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SUMMARY

The boiling point comparison between alcohol and ammonia reveals that alcohol, specifically methanol, has a higher boiling point due to stronger hydrogen bonding and dipole-dipole interactions. The discussion emphasizes the significance of intermolecular forces, particularly in polar molecules like methanol, which remains a liquid at room temperature. Reference to the CRC Handbook of Chemistry and Physics supports the understanding of these concepts, confirming the role of hydrogen bonding in boiling point elevation.

PREREQUISITES
  • Understanding of hydrogen bonding and its effects on boiling points
  • Familiarity with polar and nonpolar molecules
  • Knowledge of intermolecular forces, including dipole-dipole interactions and Van der Waals forces
  • Access to the CRC Handbook of Chemistry and Physics for reference
NEXT STEPS
  • Research the properties of methanol and its boiling point in relation to hydrogen bonding
  • Study the differences between polar and nonpolar molecules in terms of intermolecular forces
  • Explore the concept of boiling points in various organic compounds
  • Examine the role of molecular weight in determining boiling points
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Chemistry students, educators, and professionals interested in thermodynamics and molecular interactions, particularly those focusing on the properties of organic compounds and their boiling points.

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I think the answer is e). I don't think it is ammonia because of the hydrogen bonding between nitrogen and hydrogen. This will result in a higher boiling point. This is the same with Hydrogen fluoride and water. However, the two organic molecules I'm not sure. I assume that since the alcohol is a polar molecule and thus have stronger dipole-dipole interactions thus, a higher boiling point. Am i correct? Thanks.
 

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Methanol exists at RT as a liquid. You are correct the notion of hydrogen bonding increasing the bp (not only for the inorganics but for methanol as well). And if you have a CRC Handbook of Chemistry and Physics, you will find that you are in fact correct.
 
DrMark said:
Methanol exists at RT as a liquid. You are correct the notion of hydrogen bonding increasing the bp (not only for the inorganics but for methanol as well). And if you have a CRC Handbook of Chemistry and Physics, you will find that you are in fact correct.

Thanks, I'm just wondering, what does CRC stand for?
 
Not too sure if they've changed the definition, but originally CRC = Chemical Rubber Company:

http://www.hbcpnetbase.com/

A chemists constant companion back in the day.
 
You can arrange the strength of intermolecular bonding-dipole dipole, hydrogen bonding, van der wall (low or high molecular weight), etc...

which one of the compounds has a low molecular weight, and would suspect to be nonpolar?

Note that it is asking for the lowest boiling point-lack of intermolecular attaction.



very nice
 

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