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Melting Points

Posted: Wed Nov 20, 2019 9:36 pm
by Chem_Mod
Just for clarification purposes, higher the intermolecular bond strength, higher will be the melting point. This is because you want to break the intermolecular forces within the solid. So higher bond strengths will require more energy to break the bonds, thus will have a higher melting point. There were a lot of questions about this today.

Re: Melting Points

Posted: Sat Nov 23, 2019 4:39 pm
by Mansi_1D
Yes, it takes more energy to break stronger attractions, and therefore the melting point is higher.

Re: Melting Points

Posted: Fri Nov 29, 2019 9:39 pm
by ranqiao1e
Yes you are right. It takes higher energy to break the bonds.

Re: Melting Points

Posted: Fri Nov 29, 2019 9:42 pm
by Daniel Martinez 1k
Yes, you are correct. The stronger the IMF = more force needed to break the bond (i.e higher melting point).

Re: Melting Points

Posted: Sat Nov 30, 2019 1:14 pm
by Joowon Seo 3A
The things that affect intermolecular bonds are the types of bonds i.e. hydrogen and dipole-dipole bonds and the polarizability of the molecule where higher polarizability will mean greater bond strength.

Re: Melting Points

Posted: Sat Nov 30, 2019 1:37 pm
by Micah3J
What is the difference between melting point and boiling point?

Re: Melting Points

Posted: Sat Nov 30, 2019 6:47 pm
by CMaduno_1L
I think in terms of this unit, we just need to know that boiling point and melting point are when a molecule changes its phase. If the intermolecular forces are stronger in one molecule as opposed to another, it will have a higher boiling point and higher melting point relative to the other molecule. Essentially, this means that more energy is required to break the intermolecular forces holding the molecule together, and therefore the temperatures at which these molecules change phases will be greater.

Re: Melting Points

Posted: Sat Nov 30, 2019 7:43 pm
by gferg21
We don't need to know the boiling and melting points of any solutions besides water, right?

Re: Melting Points

Posted: Sat Nov 30, 2019 8:39 pm
by Jasmine Summers 4G
Yes, a stronger IMF relates to a higher melting/boiling point and a lower vapor pressure.