electron withdrawing

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Karina Kong 2H
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Joined: Thu Jul 25, 2019 12:16 am

electron withdrawing

Postby Karina Kong 2H » Thu Dec 05, 2019 10:21 pm

What does it mean a compound is more electron withdrawing and how does that have to do with acidity?

Wilson 2E
Posts: 100
Joined: Sat Aug 17, 2019 12:18 am

Re: electron withdrawing

Postby Wilson 2E » Fri Dec 06, 2019 2:18 pm

When an acid donates a hydrogen, it gains a negative charge from accepting an electron lone pair. The stability of the resulting anion determines if the acid is strong or weak. In electron withdrawing, electronegative atoms in the anion work to delocalize the negative charge and in doing so makes the anion more stable, and thus the acid stronger. An acid with a fluorine in it will thereby be stronger than that same acid if fluorine is replaced with chlorine (eg. CF3COOH > CCl3COOH)

Posts: 101
Joined: Wed Feb 27, 2019 12:17 am

Re: electron withdrawing

Postby Ayushi2011 » Fri Dec 06, 2019 3:37 pm

Higher the electronegativity of an atom, the more electron it draws, making the acid stronger.

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