Electronegativity related to solubility

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Samantha Joseph 1F
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Electronegativity related to solubility

Postby Samantha Joseph 1F » Sat Nov 04, 2017 10:03 pm

How can we use the electronegativity of a compound to see how soluble it is in water?

Sabrina Dunbar 1I
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Re: Electronegativity related to solubility

Postby Sabrina Dunbar 1I » Sat Nov 04, 2017 10:33 pm

The electronegativity values help us to see what type of bond is formed between elements. This in turn can help us see what types of molecules will dissociate in water and become soluble. Compound bonded together ionically tend to be soluble in water due to them being salts. Those molecules fully dissociate in water whereas covalent molecules tend to not be soluble in water. They do not dissolve into their original elements like most ionic compounds do. Because electronegativity determines these bond typer, it can help determine solubility.

Tanaisha Italia 1B
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Joined: Fri Sep 29, 2017 7:04 am

Re: Electronegativity related to solubility

Postby Tanaisha Italia 1B » Sun Nov 05, 2017 12:19 am

If there is a large difference in electronegativity (greater than 2) between two atoms, then they usually form an ionic bond. Atoms which form ionic bonds tend to have a more solid, lattice-like structure, and can dissolve more easily in water. Thus, higher difference in electronegativity = higher solubility.


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