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Melting points

Posted: Wed Nov 20, 2019 9:30 pm
by Hannah_1G
Would a double bond create a higher melting point than a dipole moment?

Re: Melting points

Posted: Wed Nov 20, 2019 11:05 pm
by Abigail Sanders 1E
Melting point generally depends on the type of intermolecular forces present in molecules. For example, dipole moments could contribute to a polar structure which would create dipole-dipole interactions. The strength of the double bond and its affect would depend on the size of the atoms involved and the types of intermolecular forces involved.

Re: Melting points

Posted: Thu Nov 21, 2019 2:06 am
by Tauhid Islam- 1H
Melting point and boiling points are determined by how strongly one molecule of a substance is attracted to another molecule of the same substance or another substance, essentially these forces are called intermolecular forces. These stronger these forces, the more energy required to break them and change the substance's phase, resulting in a phase change. The easier way I think about it is you have have a beaker of a solution that just contained the molecule. You wouldn't break the bonds that form the molecule inorder to get a phase shift, you just need to make the molecules less bound to one another. Double bonds are bonds that are present within a molecule and essentially makes up the molecule, so breaking that bond wouldn't result in a phase shift but a breakdown of the molecule.

Re: Melting points

Posted: Thu Nov 21, 2019 10:26 am
by Daniel Toscano 1L
I think only intermolecular forces affect melting/boiling points.

Re: Melting points

Posted: Thu Nov 21, 2019 10:35 am
by annikaying
Intermolecular forces are the only thing that determine melting and boiling points. Therefore having a double bond doesn't affect the melting point.

Re: Melting points

Posted: Sun Nov 24, 2019 3:23 pm
by vanessas0123
Intermolecular forces are the significant factors affect melting points! The stronger/ more intermolecular forces, the higher the melting/boiling points.

Re: Melting points

Posted: Sun Nov 24, 2019 3:30 pm
by Nuoya Jiang
The bond strength of a double bond is talking about "INTRA" molecular force, while the melting point is related to "INTER" molecular force.

Re: Melting points

Posted: Sun Nov 24, 2019 6:09 pm
by Tahlia Mullins
When determining relative melting points, consider the strength of the IMFs involved.

Re: Melting points

Posted: Sun Nov 24, 2019 8:52 pm
by Jesalynne 2F
Intermolecular forces affect the melting points, so the stronger the intermolecular force the higher the melting point and vice versa.

Re: Melting points

Posted: Mon Nov 25, 2019 6:56 am
by Cynthia Rodas 4H
Melting points are determined based on their intermolecular forces. The more intermolecular forces it has, the more energy it would take to break bonds, resulting in a higher boiling and melting point.

Re: Melting points

Posted: Mon Nov 25, 2019 7:40 am
by AronCainBayot2K
Melting point has a direct relationship with intermolecular forces. If the strength of a intermolecular force is strong, then the melting point must be high and vice versa with a weaker IMF. For example, molecules that have dispersion would have a lower melting point than for example a hydrogen bonded molecule.

Re: Melting points

Posted: Tue Dec 03, 2019 12:27 pm
by 605208780
A double bond does not affect the melting point. The intermolecular force is what affects the melting point.

Re: Melting points

Posted: Tue Dec 03, 2019 12:38 pm
by 105335337
A double bond has nothing to do with melting point because melting point has to do with intermolecular forces rather than molecular bonds.

Re: Melting points

Posted: Tue Dec 03, 2019 1:06 pm
by Jessica Tran_3K
IMFs take precedence over bond length when considering melting/boiling points of molecules!

Re: Melting points

Posted: Tue Dec 03, 2019 1:55 pm
by BritneyP- 2c
intermolecular forces affect the melting point not the amount of bonds it has.

Re: Melting points

Posted: Thu Dec 05, 2019 11:13 pm
by Kaitlynn Tran 3F
Double bonds affect bond strength, but it doesn't affect melting point.