[INeedSerotonin]

Hello

I found an exercise that asked me to assign  "true" or "false" to "Based on the following graph, it is possible to say that the hydrogen bonds that exist in the water molecules are weaker in a solid state than in a liquid state".



(the answer is "false")

I've read that hydrogen bonds are broken upon ebulition, for example. Can I say that there is a change in force as for hydrogen bonds in solids and liquids too?

In other words, can I say that the hydrogen bond is stronger in lliquids than in solids or vice-versa?

Could you guys please give me a hint or a link on how I can find the answer? 

Thank you

[AWK]

If I understand your problem correctly - we ask if the increase in H₂O density during melting indicates the increase in the strength of hydrogen bonds between water molecules. There is no simple answer to this question. The strength of the hydrogen bond (relatively weak bond) depends on many factors, the most important of which are the distance between the donor and acceptor atoms, the valence angle at the hydrogen atom and the temperature. All these factors change simultaneously during melting, and their changes do not work in the same direction. Even scientists can not figure it out precisely - the safest answer of the student - "I do not know" is closer to "false".

http://www1.lsbu.ac.uk/water/water_hydrogen_bonding.html

[INeedSerotonin]

Thank you!