All Questions
Tagged with hydrogen-bond alcohols
11
questions
1
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0
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125
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Water solubility comparison of stereoisomers of bicyclo [4.4.0] decane-3,4-diol
I think, (I) must be more soluble in water. It is due to trans configuration and thus, forming more effectively inter-molecular hydrogen bonds with water molecules.
- 1,280
7
votes
2
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1k
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Do amines or alcohols have stronger intermolecular hydrogen bonds?
Which has stronger hydrogen bonding, $\ce{CH3OH}$ or $\ce{CH3NH2}$
I think it comes down to which has more dominance; number of hydrogens, number of lone pairs, or electronegativity.
- 1,041
4
votes
0
answers
840
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Why mixing water with ethanol produces heat energy? [closed]
Sorry if I'm asking something stupid but I'm trying to understand where this energy gets from. As far as I could find, it is not a reaction as both chemicals left unchanged, so it might have something ...
- 149
0
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0
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39
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Why does energy need to be "compensated" in order for solvation to occur?
I am currently learning about the physical properties of alcohols.
I understand that the main intermolecular forces between alcohols and water are hydrogen bonds. When these two are mixed, the ...
- 339
-2
votes
2
answers
7k
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Why alcohol is volatile although it has hydrogen bonds?
We are always told that hydrogen bonds increase the boiling point of a liquid and as a result they decrease the liquid's volatility.
I want to know the reason why, alcohol with hydrogen bonds is ...
- 15
1
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1
answer
3k
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Molecules having higher enthalpy of vaporization and boiling point than another but with lower entropy of vaporization?
I came across the Trouton's rule that predicts the entropy of vaporization of most molecules to be around 85~88kJ/(K mol). It is said to fail when there is hydrogen bond between molecules.
When I ...
- 11
14
votes
4
answers
13k
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Why can't alcohols form hydrogen-bonded dimers like carboxylic acids?
Carboxylic acids such as acetic acid are capable of forming dimers:
I'm wondering why alcohols like ethanol don't generally form dimers. In the diagram below, the oxygen atom on the left ethanol ...
- 467
5
votes
1
answer
9k
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Hydrogen bonding in alcohols vs amines
Consider an alcohol and an amine compound with roughly the same molar mass. If I understand correctly, the boiling point for the alcohol is greater for two reasons:
The $\ce{O-H}$ bond is more polar ...
- 219
4
votes
1
answer
6k
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Explain volume contraction in mixtures of alcohol and water
Could someone explain why volume contraction occurs when you mix an alcohol such as ethanol with water in relation hydrogen bonding and the dipole-dipole forces?
- 49
21
votes
5
answers
10k
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Strength of hydrogen bonding in phenol or methanol
I wanted to know whether hydrogen bonding is stronger in phenol or methanol.
I saw on Wikipedia about the enthalpies of hydrogen bonding in various cases.
but could not find the answer to this ...
- 211
1
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1
answer
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Do alkanes evaporate faster than alcohols?
If so, is it because alchohols have hydrogen bonds?
Which type of compound evaporates faster, and why?
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