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Polarity of Nitrate

by Shehryar1
Tags: nitrate, polarity
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Jun8-13, 09:38 PM
P: 2
Is nitrate a polar or non-polar molecule? I understand that it has a trigonal planer shape (and therefore it has symmetry) but should we also consider the double bond (do multiple bonds destroy symmetry)? I assume it would be polar because it is SOLUBLE in WATER, however, after viewing many links online, many people say it is non-polar
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Jun8-13, 09:50 PM
P: 166
Resonance distributes the negative charge, so it's not constrained to any oxygen in particular. This makes the entire outside negative, so there's no polarity.
Jun8-13, 10:12 PM
P: 2
Oh okay, but why is it soluble in water?

Jun9-13, 12:26 AM
P: 166
Polarity of Nitrate

It's not polar, but it's still charged. Why are singular ions soluble in water? Na+ on its own isn't polar, but it's very soluble.
Jun12-13, 02:13 PM
P: 6
hydrogen bonding and entropy effects contribute to the Gibbs free energy of the process of dissolution. Its thermodynamically favorable for it to dissolve, and there is also a kinetic pathway available. What more could one want ? :)

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