Stronger molecular force?

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Stronger molecular force?

Postby jvera4b » Sun Nov 17, 2019 9:23 pm

Between ion-dipole and h-bonding which is the stronger molecular force? I thought it was ion-dipole because there is a full formal charge however I am not sure if this reasoning is correct.

Natalie Wang 1B
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Re: Stronger molecular force?

Postby Natalie Wang 1B » Sun Nov 17, 2019 9:25 pm

I think you are right. Ion-dipole has a larger difference in charges than H bonding.

Helen Struble 2F
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Re: Stronger molecular force?

Postby Helen Struble 2F » Sun Nov 17, 2019 10:24 pm

Ion-ion is the stronger force. We can infer this from the dramatic difference in boiling point between ionic compounds and compounds with hydrogen bonding. The melting point of water is 0 degrees celsius. The melting point of NaCl, which has ion-ion interactions, is 801 degrees celsius. This shows the dramatic difference in energy required to break ion-ion interactions vs. hydrogen bonding interactions.

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