Why HClO2 is a stronger acid than HBrO2?

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Chem_Mod
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Why HClO2 is a stronger acid than HBrO2?

Postby Chem_Mod » Tue Aug 23, 2011 7:57 pm

HClO2 is a stronger acid than HBrO2. Doesn't the fact that Cl and Br are in the same group and the Br-O bond is longer and weaker than the Cl-O bond outweigh the greater electronegativity of the Cl bond though?

Chem_Mod
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Re: Why HClO2 is a stronger acid than HBrO2?

Postby Chem_Mod » Tue Aug 23, 2011 7:57 pm

It's the O--H bond that is broken. Also the resulting ClO2- is more stable due to Cl's higher electronegativity.

Joussie Camacho 4I
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Re: Why HClO2 is a stronger acid than HBrO2?

Postby Joussie Camacho 4I » Sat Dec 08, 2018 12:55 pm

Is this true every time there's an O2 in an acid? The hydrogen will be bound to one oxygen?

Rami_Z_AbuQubo_2K
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Re: Why HClO2 is a stronger acid than HBrO2?

Postby Rami_Z_AbuQubo_2K » Sun Dec 09, 2018 5:15 pm

Since there is an equal amount of oxygens, you look at which is more electronegative (Br or Cl) and since Cl is more electronegative, it is the stronger acid.

Alli Hinmon 3E
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Re: Why HClO2 is a stronger acid than HBrO2?

Postby Alli Hinmon 3E » Sun Dec 09, 2018 5:31 pm

HBrO2 I believe is actually stronger because the O will pull the Br away from the H more so then the O will pull the Cl away from the H. Always the more electro neg atom is the strongest acid.

604656370
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Re: Why HClO2 is a stronger acid than HBrO2?

Postby 604656370 » Mon Dec 10, 2018 12:41 am

Does this apply to HNO3 and HNO2 as well? I said HNO3 is stronger because the extra oygen in the molecule helps stabilize the charge from the lone pair.

Josceline 3J
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Re: Why HClO2 is a stronger acid than HBrO2?

Postby Josceline 3J » Mon Dec 10, 2018 1:24 am

I honestly thought this was related to the electronegativity of the element. Thanks for all the help.


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