HClO4 vs H3PO4

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205743684
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HClO4 vs H3PO4

Postby 205743684 » Tue Nov 30, 2021 8:17 pm

Could someone explain why HClO4 is a stronger acid than H3PO4?
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Ryan Blaydon 1K
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Re: HClO4 vs H3PO4

Postby Ryan Blaydon 1K » Tue Nov 30, 2021 8:25 pm

I believe that is based on the fact that Cl is more electronegative than P so it pulls the oxygen in tighter. This means that Oxygens electrons are as available to the Hydrogen making it easier for HClO4 to disassociate.
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NaomiAbramowicz1H
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Re: HClO4 vs H3PO4

Postby NaomiAbramowicz1H » Tue Nov 30, 2021 8:27 pm

It is because it has a greater oxidation number, and thus has a greater electron drawing power and a weaker OH bond.
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