Strong Acids

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Aedra Li 3H
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Joined: Fri Aug 30, 2019 12:17 am

Strong Acids

Postby Aedra Li 3H » Sat Dec 07, 2019 4:56 am

When determining the strength of an acid, which is more important to consider: bond length or electronegativity?

Rebekah Alfred 1J
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Joined: Thu Jul 11, 2019 12:15 am
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Re: Strong Acids

Postby Rebekah Alfred 1J » Sat Dec 07, 2019 8:42 am

In determining the strength of an acid, there are two possible things you look at:
1. Bond Length (the longer the bond, the weaker it is)
2. Stability of the anion (which is the conjugate base)- it can be stabilized by a high electronegativity of one of the atoms and by resonance.

You determine which one is important depending on the acid given. If it asks if HF or HCl is a stronger acid, you compare bond lengths since Cl and F are in the same group. HCl would be stronger because it has a longer and weaker bond than HF.

Annie Ye
Posts: 106
Joined: Wed Sep 18, 2019 12:22 am

Re: Strong Acids

Postby Annie Ye » Sat Dec 07, 2019 9:01 am

In determining the strength of the acid when bond lengths aren't applicable, then you would look at the electronegativity. CH3 or NH2?

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