H2PO4 -

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305144105
Posts: 32
Joined: Thu May 10, 2018 3:00 am

H2PO4 -

Postby 305144105 » Fri Dec 07, 2018 7:54 pm

Is H2PO4- amphiprotic?

On a test, if we are asked to write the proton transfer equilibria for an amphiprotic species, do we write two equations? one in which it acts as an acid and one in which it acts as a base?

Andrew Bennecke
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

Re: H2PO4 -

Postby Andrew Bennecke » Sat Dec 08, 2018 12:44 am

We just write the chemical equations with equilibrium arrows, which shows how either the two compounds on either side are an acid and base.

Richard Ku 4H
Posts: 29
Joined: Fri Oct 05, 2018 12:16 am

Re: H2PO4 -

Postby Richard Ku 4H » Sat Dec 08, 2018 2:50 am

H2PO4- is not amphiprotic, but HPO42- is amphiprotic

sameeksha_panda_3h
Posts: 31
Joined: Fri Sep 28, 2018 12:25 am

Re: H2PO4 -

Postby sameeksha_panda_3h » Sat Dec 08, 2018 3:14 am

H2PO4- is! It can both accept or donate a proton


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