Homework 6A 17

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Vincent Leong 2B
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Joined: Fri Aug 09, 2019 12:15 am

Homework 6A 17

Postby Vincent Leong 2B » Fri Nov 29, 2019 4:31 pm

how do we go about determining whether each molecule is acidic or basic? Do we draw lewis structures or write out the equation w/ water or what?

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

Re: Homework 6A 17

Postby Ruby Tang 2J » Fri Nov 29, 2019 4:54 pm

For this question, I believe the main concept they want you to understand is that nonmetal oxides tend to act as acids, whereas metal oxides tend to act as bases. The classification of oxides as acids or bases is more ambiguous when the other element is a metalloid, so As2O3 and Bi2O3 would be classified as amphoteric.

Ryan Chang 1C
Posts: 105
Joined: Sat Aug 24, 2019 12:17 am

Re: Homework 6A 17

Postby Ryan Chang 1C » Sat Nov 30, 2019 12:07 am

Another way to look at it is that 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.


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