Strength of Acids vs. Number of Oxygens

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Louis Zhao 4C
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Strength of Acids vs. Number of Oxygens

Postby Louis Zhao 4C » Sat Dec 08, 2018 12:56 pm

Why does the strength of an acid increase with the oxidation number of the central atom and the number of oxygens bonded to the central atom?

Chem_Mod
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Re: Strength of Acids vs. Number of Oxygens

Postby Chem_Mod » Sat Dec 08, 2018 5:58 pm

Strength of acids can be determined by bond length with the acidic proton, and stability of the resulting anion. OXygens are electron withdrawing atoms which help stabilize the anion and its formal charge.

Rami_Z_AbuQubo_2K
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Re: Strength of Acids vs. Number of Oxygens

Postby Rami_Z_AbuQubo_2K » Sun Dec 09, 2018 5:18 pm

Because there is more ability for resonance to stabilize the anion after the proton is donated. This means that there is a better distribution of charge and makes the acid more strong.

Alli Hinmon 3E
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Re: Strength of Acids vs. Number of Oxygens

Postby Alli Hinmon 3E » Sun Dec 09, 2018 5:28 pm

It increases because the longer the bond, the weaker the bond, and when it deprotonates, the solution will have the strong acidic solution

Bella Martin
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Re: Strength of Acids vs. Number of Oxygens

Postby Bella Martin » Tue Jul 30, 2019 10:41 pm

does the number of hydrogens impact the strength of an acid? does it need to go thru multiple neutralizations to be able to get rid of all the hydrogens and thereby make it weaker?

Chris Charton 1F
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Re: Strength of Acids vs. Number of Oxygens

Postby Chris Charton 1F » Tue Jul 30, 2019 10:54 pm

Yes, if the acid is polyprotic, it will be strongest when it has the most H. For example, H3PO4 is a stronger acid than H2PO4-

This is because it is easier to remove the first H.

Bella Martin
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Re: Strength of Acids vs. Number of Oxygens

Postby Bella Martin » Wed Jul 31, 2019 9:24 am

But then after the first H is removed, is it the same strength as the other compound?


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