Basic, Acidic or Amphoteric  [ENDORSED]

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Blake_Panter_3D
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Basic, Acidic or Amphoteric

Postby Blake_Panter_3D » Sat Nov 26, 2016 12:21 pm

Is As2O3 acidic, basic or amphoteric and why?

Aileen Nguyen 3N
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Re: Basic, Acidic or Amphoteric

Postby Aileen Nguyen 3N » Sat Nov 26, 2016 12:31 pm

As2O3 is amphoteric because it can react with either acid or base.

Ex. Reaction with Acid
As2O3 we have: As2O3 + 6HCl --> 2AsCl3 + 3H2O

Reaction with base:
NaOH + As2O3 + 3H2O --> 2Na[As(OH)4]

Michelle Nguyen 2L
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Joined: Fri Sep 29, 2017 7:03 am

Re: Basic, Acidic or Amphoteric

Postby Michelle Nguyen 2L » Sun Dec 03, 2017 4:49 pm

You can also see that As2O3 would be amphoteric by looking at the periodic table; it’s located near the diagonal band separating the metals and the non metals and thus is likely to correspond to the category of elements that form amphoteric oxides (our textbook has a chart that shows exactly which semimetals form amphoteric oxides). Metal oxides are basic and nonmetal oxides are acidic

Daniel Vo 1B
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Re: Basic, Acidic or Amphoteric  [ENDORSED]

Postby Daniel Vo 1B » Sun Dec 03, 2017 11:54 pm

A few examples of elements that could make amphoteric compounds include Beryllium, Aluminum, Gallium, Indium and Arsenic.

Peter Dis1G
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Re: Basic, Acidic or Amphoteric

Postby Peter Dis1G » Mon Dec 04, 2017 6:11 pm

I am confused exactly how many elements do the diagonal line cover are amphoteric?


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