polyprotic acids and bases in equations

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Ruiting Jia 4D
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am

polyprotic acids and bases in equations

Postby Ruiting Jia 4D » Fri Dec 07, 2018 11:50 pm

when writing the proton transfer equilibria equations, do we need to automatically apply polyprotic acids/bases such that for example in H2SO4 it is H2SO4 + H2O -> H3O+ + SO4 2- ? or would it still be HSO4 - ?

Iona Pay
Posts: 43
Joined: Fri Sep 28, 2018 12:15 am

Re: polyprotic acids and bases in equations

Postby Iona Pay » Sun Dec 09, 2018 12:56 am

If you're writing the proton transfer equation, you should assume that it refers to removing 1 proton - so your conjugate base would be HSO4-, not just SO4-.

805169754
Posts: 61
Joined: Fri Sep 28, 2018 12:19 am

Re: polyprotic acids and bases in equations

Postby 805169754 » Sun Dec 09, 2018 2:56 am

If at anytime you are confused at these types of questions, you could look at the chemical equation to see if all the hydrogen atoms are accounted for in the reactants and products.

Kirsty Star 2H
Posts: 48
Joined: Fri Sep 28, 2018 12:24 am

Re: polyprotic acids and bases in equations

Postby Kirsty Star 2H » Sun Dec 09, 2018 9:15 am

When showing a polypeptide acid dissociating it should have both steps right? Or should we simplify into 1 step


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