Midterm Q3
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Midterm Q3
In Q3 of the Midterm, part D, it states Phosphoric acid is used to acidify foods and beverages such as various colas and jams and provides a tangy or sour taste. Write the reaction that represents Ka2 for phosphoric acid (H3PO4). What would've been the correct answer?
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Re: Midterm Q3
So the is the second deprotonation of phosphoric acid, which means two ions will be gone.
The first deprotonation () would be:
The second deprotonation () would be:
There were 4 points in total for the correct equation, phases, and oxidation numbers.
The first deprotonation () would be:
The second deprotonation () would be:
There were 4 points in total for the correct equation, phases, and oxidation numbers.
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Re: Midterm Q3
Deprotonation is just the dissociation of an acid when it reacts with H2O to produce H3O+. Polyprotic acids like H3PO4 have multiple hydrogens which it can give off, hence the possibility for a Ka2 value.
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Re: Midterm Q3
Lynsea_Southwick_2K wrote:What section covers deprotonation?
Just to add on to the previous reply, it is covered in the acid-base equilibrium section. It is related to the definition of acids and bases with respect to loss/gain of hydrogen.
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