6A.17

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Shanzey
Posts: 120
Joined: Wed Sep 18, 2019 12:20 am

6A.17

Postby Shanzey » Sun Dec 01, 2019 10:12 pm

How are we able to tell that As2O3 and Bi2O3 are amphoteric compounds? I drew the Lewis structure for the compound, but I do not understand how we can tell that they possess both acidic and basic abilities.

saigorijavolu2k
Posts: 108
Joined: Sat Sep 28, 2019 12:15 am

Re: 6A.17

Postby saigorijavolu2k » Sun Dec 01, 2019 10:16 pm

Amphoteric compounds are compounds that can react as an acid and base. If you react them with water, there would be 2 reactions. If you write this out then you can tell. Also it is general pattern. There is chart in the textbook which can help.

Ruby Tang 2J
Posts: 102
Joined: Fri Aug 30, 2019 12:15 am

Re: 6A.17

Postby Ruby Tang 2J » Mon Dec 02, 2019 7:10 pm

In general, metal oxides tend to act as bases while nonmetal oxides tend to act as acids. The oxides of elements on or near the diagonal metalloid line going down the periodic table have relatively equal acidic and basic character, so they are considered amphoteric.

erica thompson 4I
Posts: 55
Joined: Wed Sep 18, 2019 12:21 am

Re: 6A.17

Postby erica thompson 4I » Wed Dec 04, 2019 9:26 pm

saigorijavolu33J wrote:Amphoteric compounds are compounds that can react as an acid and base. If you react them with water, there would be 2 reactions. If you write this out then you can tell. Also it is general pattern. There is chart in the textbook which can help.


Where is this chart in the textbook???

Melvin Reputana 1L
Posts: 55
Joined: Sat Aug 17, 2019 12:16 am

Re: 6A.17

Postby Melvin Reputana 1L » Wed Dec 04, 2019 10:31 pm

The chart is on the left side of page 450 in the textbook. It is called Figure 6A.7.

Princess Jereza 3C
Posts: 46
Joined: Sat Jul 20, 2019 12:16 am

Re: 6A.17

Postby Princess Jereza 3C » Thu Dec 05, 2019 2:05 am

Amphoteric compounds are compounds with characteristics of acids and bases, and metals/metalloids can form amphoteric compounds with oxygen because they can possess different oxidation states. In 6A.17, As2O3 & Bi2O3 are amphoteric because of the arsenic and bismuth metals. I hope this helps!


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