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24 votes
4 answers
22k views

Which has stronger hydrogen bonds: water or ice?

As ice is the solid form of water and it has more hydrogen bonds than water because its oxygen atoms are precisely tetrahedrally positioned and each oxygen is hydrogen bonded by four neighbouring ...
Rabik John's user avatar
6 votes
3 answers
18k views

Why is ice less dense than water?

I know the traditional explanation, which says that ice has large spaces between $\ce{H2O}$ molecules because hydrogen-bonding gives it an open structure. But what does the open structure have to do ...
John's user avatar
  • 485
2 votes
1 answer
1k views

Hydrogen Bonding in Water Phase Changes

How is the disparity between the heat of fusion and the heat of vaporization for $\ce{H2O}$ best explained? A) It takes more hydrogen bonds for water to fuse than it does to vaporize. B) Water ...
user42282's user avatar
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 ...
Sleepy Hollow's user avatar