Melting Points

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Melting Points

Postby Chem_Mod » Wed Nov 20, 2019 9:36 pm

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.

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Re: Melting Points

Postby Mansi_1D » Sat Nov 23, 2019 4:39 pm

Yes, it takes more energy to break stronger attractions, and therefore the melting point is higher.

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Re: Melting Points

Postby ranqiao1e » Fri Nov 29, 2019 9:39 pm

Yes you are right. It takes higher energy to break the bonds.

Daniel Martinez 1k
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Re: Melting Points

Postby Daniel Martinez 1k » Fri Nov 29, 2019 9:42 pm

Yes, you are correct. The stronger the IMF = more force needed to break the bond (i.e higher melting point).

Joowon Seo 3A
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Re: Melting Points

Postby Joowon Seo 3A » Sat Nov 30, 2019 1:14 pm

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.

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Re: Melting Points

Postby Micah3J » Sat Nov 30, 2019 1:37 pm

What is the difference between melting point and boiling point?

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Re: Melting Points

Postby CMaduno_1L » Sat Nov 30, 2019 6:47 pm

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.

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Re: Melting Points

Postby gferg21 » Sat Nov 30, 2019 7:43 pm

We don't need to know the boiling and melting points of any solutions besides water, right?

Jasmine Summers 4G
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Re: Melting Points

Postby Jasmine Summers 4G » Sat Nov 30, 2019 8:39 pm

Yes, a stronger IMF relates to a higher melting/boiling point and a lower vapor pressure.

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