Strengths of Acids

Acidity
Basicity
The Conjugate Seesaw

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Alexia Joseph 2B
Posts: 56
Joined: Thu Jul 27, 2017 3:01 am

Strengths of Acids

Postby Alexia Joseph 2B » Sat Dec 09, 2017 5:49 pm

Can anyone help explain to me how we are supposed to classify acid strength given something like a group of different acids? I keep reading that for oxoacids, the greater the number of highly electronegative atoms attatched to the central atom, the stronger the acid is, but I don't really understand why. I also don't understand why a stronger acid has greater e- withdrawing power, because doesn't the definition of an acid that we're using in this part mean an acid is an H+ donor?

Jesse_torres2H
Posts: 41
Joined: Thu Jul 27, 2017 3:00 am

Re: Strengths of Acids

Postby Jesse_torres2H » Sat Dec 09, 2017 11:20 pm

If we have something like HClO2 and HClO the additional O in HClO2 increases the electronegativity and helps to pull the electron in H out of the H-O bond. Hope this helps a little bit.

Ashley Fallon 3C
Posts: 18
Joined: Fri Sep 29, 2017 7:06 am
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Re: Strengths of Acids

Postby Ashley Fallon 3C » Sun Dec 10, 2017 10:21 pm

acid strength can be determined by looking at how stable its conjugate base is. If the conjugate base has more EN atoms, then it creates delocalization of electrons and makes it more stable


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