Page 1 of 1

6A.17b

Posted: Fri Nov 29, 2019 10:35 pm
by Joanne Kang 3I
State whether the following oxides are acidic, basic, or amphoteric:
b. SO3
Can someone please explain why this molecule is basic??

Re: 6A.17b

Posted: Sat Nov 30, 2019 12:05 am
by Ryan Chang 1C
SO3 is basic, not acidic.

Acidic oxides are oxides that reacts with water to form a solution of a Bronsted acid. SO3 is an example of an acidic oxide because when it reacts with water, it forms H2SO4. SO3 + H20 --> H2SO4. Since H2SO4 is an acid, SO3 is an acidic oxide. It is also useful to not that nonmetals are generally acidic and will typically form acidic oxides.

Re: 6A.17b

Posted: Sat Nov 30, 2019 12:11 pm
by Kishan Shah 2G
Ryan Chang 3A wrote:SO3 is basic, not acidic.

Acidic oxides are oxides that reacts with water to form a solution of a Bronsted acid. SO3 is an example of an acidic oxide because when it reacts with water, it forms H2SO4. SO3 + H20 --> H2SO4. Since H2SO4 is an acid, SO3 is an acidic oxide. It is also useful to not that nonmetals are generally acidic and will typically form acidic oxides.


Yes, SO3 is an acidic oxide.

Re: 6A.17b

Posted: Wed Dec 04, 2019 3:54 pm
by Siddiq 1E
Wait if it's an acidic oxide why is the answer basic...? Am i missing something or getting caught up in the wordiness?

Re: 6A.17b

Posted: Wed Dec 04, 2019 10:27 pm
by Melvin Reputana 1L
Acidic oxides are commonly molecular compounds, while basic oxides are usually ionic compounds. Therefore, for this problem, SO3 is a molecular compound which means that it is an acidic oxide.

Re: 6A.17b

Posted: Thu Dec 05, 2019 3:44 pm
by 905385366
S 1C wrote:Wait if it's an acidic oxide why is the answer basic...? Am i missing something or getting caught up in the wordiness?

The answer is that it would be Acidic.