All Questions
Tagged with hydrogen-bond physical-chemistry
6
questions
38
votes
2
answers
30k
views
What exactly is hydrogen bonding (and does it really need fluorine, oxygen, or nitrogen)?
I'm not satisfied with the rationale for the intermolecular attraction known as hydrogen bonding. In my book, it states that
Hydrogen bonding is a special type of intermolecular attraction between ...
- 1,201
10
votes
1
answer
16k
views
How does intramolecular hydrogen bonding cause the molecules to be separated from each other?
I learnt about intramolecular hydrogen bonding today, which occurs between molecules such as ortho-nitrophenol. What I was told is that in case of intramolecular bonding, the molecules separate from ...
- 735
6
votes
3
answers
40k
views
Strength of intramolecular vs intermolecular hydrogen bonds
Why are intramolecular hydrogen bonds weaker than intermolecular hydrogen bonds?
- 79
3
votes
1
answer
2k
views
How does the entropic force arise within the hydrophobic effect?
I know that the hydrophobic effect is usually explained by the entropic effect originating from the disruption of hydrogen bonds between molecules of water and the nonpolar substance. The hydrogen ...
- 153
0
votes
1
answer
2k
views
Why is the melting point of hydrogen fluoride lower than that of ammonia?
The melting point of hydrogen fluoride is -83.6°C, as compared to that of ammonia, which is -77.73°C. How does this make any sense?
Both hydrogen fluoride and ammonia show hydrogen bonding, which "...
- 614
4
votes
1
answer
35k
views
Why is the boiling point of water and ammonia so different?
Boiling point of water is 100 degrees Celsius, while boiling point of ammonia is minus 33 degrees Celsius, which makes 133 degrees difference. Now when we discuss value of boiling point, we also say ...
- 970