Electronegativity & Acid Strength

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Ryan Danis 1J
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Joined: Fri Sep 28, 2018 12:18 am

Electronegativity & Acid Strength

Postby Ryan Danis 1J » Sat Dec 08, 2018 2:35 pm

Can someone explain why electronegativity has an effect on the strength of acids? Thanks!

spark99
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Re: Electronegativity & Acid Strength

Postby spark99 » Sat Dec 08, 2018 2:41 pm

Acidity increases with the increase of electronegativity.

Michael Torres 4I
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Re: Electronegativity & Acid Strength

Postby Michael Torres 4I » Sat Dec 08, 2018 2:44 pm

When comparing the strengths of acids such HOI and HOCl, the electronegativities of the Cl or I ions is important because these atoms pull electrons away from the HO bond toward themselves. This weakens the bond between the O and H atoms. The weaker the bond is, the stronger the acid will be since it will be easier for the H proton to dissociate. Therefore, the compound possessing the atom with higher electronegativity, which would be HOCl in this case, will be a stronger acid.


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