Amphoteric compounds

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Ahmed Mahmood 4D
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Joined: Fri Sep 28, 2018 12:28 am

Amphoteric compounds

Postby Ahmed Mahmood 4D » Tue Dec 04, 2018 9:31 pm

Is there a set, defined way to find out if a substance is amphoteric?

Posts: 117
Joined: Fri Sep 28, 2018 12:15 am

Re: Amphoteric compounds

Postby aisteles1G » Wed Dec 05, 2018 8:33 am

A way I see it is react the compound with H20 to form an H30+ cation in the products and then react it with H20 to form a OH- in the products. If both of these equations are possible, then the compound is amphoteric since it can both donate a proton and accept a proton and the different equations with the same reactants but different products proves this.

Becky Belisle 1A
Posts: 81
Joined: Fri Sep 28, 2018 12:18 am

Re: Amphoteric compounds

Postby Becky Belisle 1A » Wed Dec 05, 2018 9:03 am

I think there are some ways to tell. For example, H2PO4-, it is apparent it can accept a proton because it has a negative charge, but it also has protons to donate.

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