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Chris Tai 1B
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Joined: Sat Aug 24, 2019 12:16 am


Postby Chris Tai 1B » Mon Dec 02, 2019 8:42 pm

State whether the following oxides are acidic, basic, or amphoteric: (a) BaO; (b) SO3; (c) As2O3; (d) Bi2O3.

Why is b acidic? Doesn't the molecule have to have a H+ to donate in order for it to be acidic?
Could someone also provide a examples of c and d reacting in an amphoteric manner?

Tiffany_Chen 2K
Posts: 106
Joined: Fri Aug 30, 2019 12:15 am

Re: 6A.17

Postby Tiffany_Chen 2K » Mon Dec 02, 2019 8:49 pm

Metal oxides generally form basic oxides, while nonmetal oxides generally form acidic oxides. Sulfur is a nonmetal thus will be acidic. Amphoteric oxides (shown in class) can react as both an acid or base to form a salt and water.

Ziyan Wang 3J
Posts: 51
Joined: Wed Sep 18, 2019 12:22 am

Re: 6A.17

Postby Ziyan Wang 3J » Thu Dec 05, 2019 3:37 pm

When SO3 dissolves in water, it becomes H2SO4, the sulfate acid. For c and d, if they react with acidic matter, they can act as a base. If they react with basic matter, they can act as an acid.

Shrayes Raman
Posts: 129
Joined: Sat Jul 20, 2019 12:15 am

Re: 6A.17

Postby Shrayes Raman » Sun Dec 08, 2019 12:12 am

Lavelle said that nonmetal oxides usually form acidic solutions

Posts: 101
Joined: Wed Feb 27, 2019 12:17 am

Re: 6A.17

Postby Ayushi2011 » Sun Dec 08, 2019 1:06 am

Non metal oxides generally form acids and metal oxides form strong bases.

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