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iluvchem09
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Why is there a difference in boiling points between methanal (CH2O) which is -21degrees Celsius and ethanal (CH3CHO) which is +21degrees Celsius?
Comparing Boiling Points of Methanal & Ethanal
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Discussion Overview
The discussion centers on the differences in boiling points between methanal (CH2O) and ethanal (CH3CHO), exploring the underlying reasons for this discrepancy. Participants examine factors such as molecular mass, hydrogen bonding, and electrostatic attractions, with a focus on theoretical and conceptual aspects.
Discussion Character
- Exploratory, Technical explanation, Conceptual clarification
Main Points Raised
- Some participants inquire about the reasons for the boiling point difference, noting methanal's boiling point is -21 degrees Celsius while ethanal's is +21 degrees Celsius.
- One participant suggests that molecular mass may contribute to the boiling point difference.
- Another participant mentions mass, hydrogen bonding with oxygen, and electrostatic attraction as potential factors influencing boiling points.
- One participant asserts that hydrogen bonding is the strongest effect among those mentioned.
- A later reply introduces the idea that ethanal forms a more stable enolate, which may also play a role in its boiling point.
Areas of Agreement / Disagreement
Participants express differing views on the primary reasons for the boiling point differences, with no consensus reached on which factor is most significant.
Contextual Notes
Participants have not fully resolved the contributions of molecular mass, hydrogen bonding, and electrostatic attractions, nor have they clarified the implications of enolate stability on boiling points.
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